Why shouldn't I invest more money in lending club?

[Account Closed]

I started investing money in Oct 2010 in lending club. My current annualized returns are 11.28% (I think my projected long term return will be around 9.5%). The only reason I can find not to continue to invest on the platform (besides the fact the loans are unsecured), is that there is/was a mention in the company prospectus that if they go bankrupt, I could lose my money. The company is not profitable, at least as of an article I read that was written in 2010.

Anyone have a reason why I should not put more money into this investment? It seems to be working for me, but I want to make sure I am not missing a large risk.