Stealing Souls, Satan can do it..can we? Options

I am curious, not because I am a satanist but because I really would want to do this. I always here of people (usually satanists) selling their souls or making a pact with a demon or something but is it possible for another human to infact give away their soul to another? My reasons for wanting to know your opinion are quite private but I just am wondering what you think.

lol I see...by posting that last post I posted I also wanted to prove a point, I said something against karma and went against it and you, right on que, came to its defense. (action/reaction). But I will take in your advice about researching it more, its just that when I see people talk about karma they are usually using it as a crutch when they're in an argument about whether they believe what someone is doing is morally right or not...hmmm I just woke up so forgive me if this isnt that clear....but anyways thats just what I'VE seen...