It's too bad Ira didn't trademark "Prosper Ira." 
I'll be sending them a Cease & Desist letter immediately. Who cares if I have any legal grounds? That certainly never stopped Prosper. 
I do take a small amount of comfort in the idea that anyone who Googles "Prosper IRA" may end up here at Org. 
Tried it, and only saw 2 links to .org in the 16 pages of results. One uninteresting looking one at the bottom of page 5, and one on page 14 that included punctuation ("... all things Prosper. Ira seemed to indicate...").
I don't think it's going to drive too many people here.