He looks for bad sites to send them to the centre which will block them. Is this good or bad?

This brother is to be commended for his protective jealousy
regarding haraam things and for his hatred of sin and desire to combat it
and rid the people of its evils. But we do not advise him to look for bad
sites in order to tell the centre to block them. That is for many reasons,
including the following: 

1 – the Prophet (peace and blessings of Allaah be upon
him) has informed us of and warned us against the temptation (fitnah) of
women. Undoubtedly the fitnah of naked women in different poses is very
great. 

It was narrated that Usaamah ibn Zayd (may Allaah be pleased
with him) said: The Messenger of Allaah (peace and blessings of Allaah
be upon him) said: “I have not left behind me any fitnah that is more
harmful to men than women.” Narrated by al-Bukhaari, 4808; Muslim, 2740. 

2 – The Muslim is commanded to keep away from places of
fitnah and to flee from places where it is present and shun its people.
Undoubtedly seeking out these sites goes against all of that. 

It was narrated that ‘Imraan ibn Husayn (may Allaah be
pleased with him) said: The Messenger of Allaah (peace and blessings of
Allaah be upon him) said: “Whoever hears of the Dajjaal, let him flee from
him, for by Allaah, a man may come to him thinking that he is a believer,
then follow him because of the specious arguments that he presents.”
Narrated by Abu Dawood, 4319; classed as saheeh by al-Albaani in Saheeh
al-Jaami’, 6301. 

Ibn al-Jawzi (may Allaah have mercy on him) said: 

Beware – may Allaah have
mercy on you – of exposing yourself to the causes of calamity, for it is
unlikely that those who approach fitnah will be safe from it. Just as
caution leads to being safe, so too exposing oneself to fitnah leads to
doom, and it is rare that one remains safe from fitnah when approaching it;
even those who are safe from fitnah when they approach it will not be safe
from thinking about it or being influenced by it. 

Dhamm al-Hawa, p. 126 

3– The Muslim is commanded to lower his gaze and avoid
looking at haraam things; checking on these permissive websites and what is
in them goes against this command. 

Allaah says (interpretation of the meaning): 

“Tell the believing men to lower their gaze (from looking
at forbidden things), and protect their private parts (from illegal sexual
acts). That is purer for them. Verily, Allaah is All‑Aware of what they do”

[al-Noor 24:30]

Ibn Katheer (may Allaah have mercy on him) said: 

This is a command from Allaah to His believing slaves to
lower their gaze and avoid looking at that which is forbidden to them, so
they should not look at anything except that which Allaah has permitted them
to look at. If their gaze happens to fall upon something haraam, then it is
unanimously agreed (among the scholars) that if a person’s gaze falls upon
something haraam unintentionally, then he should look away immediately. It
was narrated by Muslim in his Saheeh that Jareer ibn ‘Abd-Allaah
al-Bajali (may Allaah be pleased with him) said: I asked the Prophet
(peace and blessings of Allaah be upon him) about an accidental glance, and
he told me to look away. 

Tafseer Ibn Katheer, 3/282 

4 –  The saheeh text
states that it is forbidden for a man to look at the ‘awrah of another man,
so what about a man looking at the ‘awrah of a woman? 

It was narrated from Abu Sa’eed al-Khudri that the Messenger
of Allaah (peace and blessings of Allaah be upon him) said: “No man
should look at the ‘awrah of another man, and no woman should look at the
‘awrah of another woman.” 

Narrated by Muslim, 338. 

5 – The Muslim is forgiven the first glance, but repeatedly
looking at corrupt sites goes against that. 

It was narrated that Buraydah ibn al-Husayb said: The
Messenger of Allaah (peace and blessings of Allaah be upon him) said to
‘Ali: “O ‘Ali, do not follow one glance with another; you are forgiven the
first but not the second.” Narrated by al-Tirmidhi, 2777; Abu Dawood, 2149.
classed as hasan by Shaykh al-Albaani in Saheeh al-Targheeb, 1903. 

It was narrated that Jareer ibn ‘Abd-Allaah said: I asked the
Messenger of Allaah (peace and blessings of Allaah be upon him) about
an accidental glance, and he told me to look away. Narrated by Muslim,
2159. 

Al-Nawawi said: 

What is meant by an accidental glace is if one’s gaze falls
upon a non-mahram woman accidentally; there is no sin in that initially, but
he must look away immediately. If he looks away immediately, there is no sin
on him, but if he persists in looking, then he has sinned, because of this
hadeeth, for the Prophet (peace and blessings of Allaah be upon him)
commanded him to look away. And Allaah says (interpretation of the
meaning): 

“Tell the believing men to lower their gaze (from looking
at forbidden things), and protect their private parts (from illegal sexual
acts)…”

[al-Noor 24:30]
Men must lower their gaze and avoid looking at women at all times, except
for sound and legitimate purposes, namely testimony, medical treatment,
proposing marriage, buying a slave girl, buying and selling, etc. In these
cases it is permitted to look only as much as is necessary and no more. And
Allaah knows best. 

Sharh Muslim, 14/139 

6 – The Prophet (peace and blessings of Allaah be upon
him) called a forbidden glance the “adultery of the eye”. In addition to it
being haraam in the sense of transgressing the limits with regard to
looking, it is also an act of ingratitude for the gift of sight that Allaah
has bestowed upon the Muslim. 

It was narrated from Abu Hurayrah that the Prophet
(peace and blessings of Allaah be upon him) said: “Allaah has decreed for
the son of Adam his share of zina (adultery), which will inevitably happen.
The zina of the eyes is looking, the zina of the tongue is speaking; the
heart hopes and wishes for that and the private parts confirm it or deny
it.” Narrated by al-Bukhaari, 5899; Muslim, 2657. 

Al-Nawawi said: 

What this hadeeth means is that a share of zina is decreed
for the son of Adam; in some cases zina will be in a real sense, namely
unlawful sexual relations; in other cases it will be zina in a metaphorical
sense, by looking at haraam things, or listening to stories of zina and
things that have to do with it, or by touching a non-mahram woman with his
hand or kissing her, or by walking to zina, or looking, or touching, or
speaking in haraam ways with a non-mahram woman, and so on, or by thinking
of it in one’s heart. All these are metaphorical kinds of zina. 

“The private parts
confirm that or deny it” means, zina with the private parts may or may not
take place even though a person may have been approaching that. And Allaah
knows best. 

Sharh Muslim, 16/206 

7 – There are an estimated 8 billion permissive websites, up
from approximately half a billion in 1998. So how about now? If you were to
give each website a quick glance, how would your heart end up? How much time
would you waste in seeking them out? Undoubtedly doing that would destroy
one’s heart and body, and would be a waste of time. 

8 – Continually looking at these evil and provocative sites
may cause one to become attached to them, so his heart would be filled with
forbidden love and become corrupted. Thus he will have exposed himself to
fitnah and doom after having been sound and healthy. 

Ibn al-Jawzi (may Allaah have mercy on him) said: 

A person may be exposed
to the causes of love so he falls in love, and he may see a person and this
first glance does not create love, but repeatedly looking at that person and
mixing with him or her may lead to what was unthinkable. Some people may
look at a person and that creates some kind of love, but then they keep away
and the love disappears, because continual looking may cause love to grow,
like a garden planted with seeds which, if it is neglected, will shrivel and
die, but if it is watered it will flourish. 

Dhamm al-Hawa, p. 237 

Ibn al-Qayyim (may Allaah have mercy on him) said: 

The more looks follow
one another, the more the heart becomes attached, like water with which a
tree is irrigated. If too much water is given the tree is damaged. Similarly
if glances are repeated that undoubtedly corrupts the heart. If the heart is
exposed to this problem, it will turn away from what it has been commanded
and the person will be faced with problems which will inevitably lead him to
commit forbidden actions, and his heart will be destroyed. The reason for
that is that the one who looks enjoys looking the first time, then he wants
to look again, like eating delicious food, when he takes the first bite. But
if he had lowered his gaze from the outset, his heart would be at peace. 

Rawdat al-Muhibbeen, p. 94, 95 

And he said: 

Letting one’s gaze wander leads to becoming heedless about
Allaah and the Hereafter, and will make him intoxicated with love, as Allaah
says concerning the lovers of images (interpretation of the meaning): 

“Verily, by your life (O Muhammad), in their
wild intoxication, they were wandering blindly”

[al-Hijr 15:72]

Looking is like a glass of wine, and love is the intoxication
that results from that. The drunkenness of love is worse than the
drunkenness caused by wine, for the drunkenness caused by wine will pass,
but the drunkenness of love rarely passes until one is in the throes of
death. 

Rawdat al-Muhibbeen, p. 104 

9 – Repeatedly looking
at those evil sites may lead a person to commit haraam actions, or to
imitate the things he sees. So it starts with looking, and ends with
committing haraam deeds. 

Ibn al-Qayyim said: 

Looking is the origin of most of the problems that befall
man, because looking generates thoughts, then thoughts generate ideas, and
ideas generate desires, and desires generate will, which then becomes
stronger and becomes firm resolve, in which case the deed will inevitably be
done unless there is something to prevent it. Hence it was said that
patience in lowering the gaze is easier than patience in bearing the pain
that comes afterwards. 

Al-Jawaab al-Kaafi, p. 106 

10 – Repeatedly looking at those evil sites causes other
kinds of harm too, such as desensitization, and after a while you will never
regard that thing as evil and you will get used to looking. This is a sign
that the heart has died and lost the shar’i sensitivity towards sin. Another
effect is that you expose yourself to suspicion, if someone sees you going
to these sites or if others see that on your computer.  

Finally, 

What you should keep away from is looking at these sites,
even if the purpose is to inform the authorities of them, for the Shayatan
may make you go to these sites on this basis and then lead you to worse sins
after that. 

There are technical means available which mean that the
Muslims does not need to seek out these sites, and there are specialized
committees in some government departments and companies who block these
sites. Undoubtedly when a committee in a work place views such things, that
is not like a person viewing these sites alone at home, because the person
who is doing that alone is more likely to fall into the trap of these sites.
 

We are not speaking of something imaginary or something that
is impossible or unlikely. We often hear stories of righteous young men who
have been tempted by these sites; they start with a glance, then they waste
their time with them. 

You have no need of all that; protect your capital and do not
take risks. We ask Allaah to write your reward in full and to make you
steadfast in adhering to truth and guidance. 

And Allaah knows best.