A few things, by clicking a referral link if you are a new lender you get $25 free when you open an account
Of course I have a vested interest (I am a member there) and when you get $25, I get $25 too for referring you

[full disclosure]
Here is the link
Affiliate link removed by emmasdad - We do not allow affiliate links in the forums. Anyone interested in pursuing a prosper account is free to contact you by PM for more details.
iceman just showed up there - there is a forums section, its worth a read and study - although its quite negative I'd say if you avoid HR listings and avoid anyone who has a current deliqnuent bill outstanding the website stats say you can make around 9%
But obviously to outperform that you have to do more than that... it does have a learning curve just like anything, stock investing, etc but being an avid stock investor I'd say the learning curve is much less comprehensive. I have been investing in stocks for 15+ years and still learn

Prosper you can probably derive your strategy within 3 months.
Anyhow good luck and again if you link through that link above and register as a new lender you make $25 free when you make your first micro loan ($50) and that loan is within a succesful listing... i.e. a loan is created.
Good luck and I am active on the forums over there - any questions give me a hollar.