I would stay away from them. I attended one of their introductory sessions because a VERY good friend of mine recommended me to try it. After spending an hour in the session where they try to convince you how bad your daily job is and try to sell you this grand dream of how much you can make pretty much by just following them. I felt it was too good to be true and left the session. My friend insisted that even though it looks too good to be true,  IT IS INFACT TRUE and made me talk to one of his colleages who's made 100K plus within the last year. Still, I never bought my friend's claim and it actually cost us our friendship. I haven't talked to him since then.

Just google Quickstar scam and you will come up with plenty of hits. here is one from NBC's dateline program which explains this scam 

http://quixtar-ibo.blogspot.com/2007/06/dateline-investigation-on-quixtar-aka.html