He makes some useful contributions on the Internet and sometimes he checks out haraam things, should he stay there or leave?

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Check below answers in case you are looking for other related questions:
Means of helping oneself to lower one’s gaze
Is treating people equally unfairly justice?

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Related Answers:
Keeping a dog, touching it and kissing it
Selling cameras to those who will use them for haraam pictures
He insults Islam – should he be friends with him? How should he deal with him?
Means of helping oneself to lower one’s gaze
Is treating people equally unfairly justice?

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