Ruling on investing in Internet cafes
Question

                What is the ruling on investing and trading in Internet cafes, even though I do not know whether a user will go to beneficial sites or to harmful and haraam sites? There are chat programs in which people can get to know one another, and that often takes place between the sexes, and there may be exchange of indecent pictures, movies and songs through it.
Praise be to Allah.
    If these computers may be used to access reprehensible and 
    false things that are detrimental to Islamic beliefs or through which people 
    will look at indecent images and movies and stories, or engage in dubious 
    conversations or haraam games, and the owner of the cafe cannot prevent 
    these evils or cannot control these computers, then in that case it is 
    haraam to deal in what has been mentioned, because that is helping in sin 
    and transgression, and Allaah, may He be glorified and exalted, says in His 
    Holy Book (interpretation of the meaning):

    “Help you one another in Al‑Birr and At‑Taqwa (virtue, 
    righteousness and piety); but do not help one another in sin and 
    transgression. And fear Allaah. Verily, Allaah is Severe in punishment”

    [al-Maa’idah 5:2]

    And Allaah is the source of strength. may Allaah send 
    blessings and peace upon our Prophet Muhammad and his family and Companions. 
    End quote. 

    The Standing Committee for Academic Research and Issuing Fatwas