Is income from an internet café halaal or haraam?

The internet may be used for both halaal and haraam purposes,
for both good and evil. If you can control the place and prevent people from
using the internet in haraam ways, then the income that comes from this café
is halaal. 

But if the owner of the café is careless about denouncing
evil actions of his customers and he does not prevent them from doing haraam
things, then he is a sinner, because he does not denounce evil and he
cooperates with them in sin. In that case his income is evil and is haraam. 

See also question no.
34672 

And Allaah knows
best.