Any reason onto why?
There's a few reasons I limited the investment:
1) I don't want to hold on to 5k Bitcoin of other peoples money, as mentioned before.
2) I want PRC to bankroll 100% and have no investors but I think it's best to do it in smaller steps so as not to have drastic changes.
3) The biggest concern for potential buyers is "Will the site be as popular without investment", I can get data on that if I bankroll myself.