Hi can anybody advise on how safe the files on 4shared are for download please?

I have an android phone, i have seen games on here that i would like (namely footymanager) but there isnt any reviews for the files and it just seems like a lottery! How do i know the file is safe to download?

Its also the same for blackmarket alpha, the same game is on there, and ther are many places to download it from....but how do i know which one is good?

Thanks