what is uploaded from my computer when i...

...download movies using bitcomet? is it safe for my computer?

If this is a bit torrent set up then you are sharing the files you have already downloaded."D"

I believe that any use of "file-sharing" services puts your computer at some kind of risk. You don't really know what it is that you're getting, and giving other people access to files in your computer is inherently dangerous.If that weren't enough, you are engaging in an ILLEGAL practice which could result in more serious penalites than you may imagine. The Motion Picture Association Of America is prosecuting all instances of film piracy. Do yourself a favor--get out of this dangerous business.