Google them and add their name at the end. Is it really that hard? Bree Olson is clearly the dumbest and Gia Jordan is probably the most intelligent and the funniest (although she's not exactly hot or active these days).
Courtney Cummz is also really dense. She once tried to tell everyone how inner-city gangs are actually good for the community because, aside from the murders and drug dealing, they often sell t-shirts and hats on the street to support their community and local schools and whatnot. I'm not kidding. She is mentally retarded and she loves the black gang culture. Check her blog.