Ok I'll bite:

http://houston.craigslist.org/ads/1412079051.html
Real. Reasoning: If she wasn't real she'd probably steal a more attractive picture so she's either real and not attractive or fake and not smart. Wouldn't see her cause she's kind of fugly.

http://houston.craigslist.org/ads/1412076134.html
Might be real but I couldn't even get through her ad. I find it most annoying when people use caps in the wrong places. Found another ad of her in which I couldn't tell whether it was the same girl or not.

http://houston.craigslist.org/ads/1412001801.html

Probably fake. Reasoning: The pic looks too professional..if she cared that much she'd probably have a website. I'd say scammer who changes her number every few months hence the zero hits on google.

http://houston.craigslist.org/ads/1411969214.html
Fake. Reasoning: I've seen too many of these fake Asian ads. I'd say this is an incall brothel place that could be hit or miss. I might check it out but would not expect to see the girl in the picture.

http://houston.craigslist.org/ads/1411966311.html

Might be legit. Might see her.

http://houston.craigslist.org/ads/1411798793.html
Looks like she's probably real. Nothing in the ad that draws me to her though.

http://houston.craigslist.org/ads/1411921932.html
I can't tell what her body's like from the photos...pass.

1 real if overly optimistic about her appearance
2 real but probably wouldnt see her since the only way to stop caps lock abuse is to make it financially impossible to practice it.
3 fake and she cropped the head so she doesn't want to be recognized
4 standard amp ad, interesting they do outcall most of that crowd doesnt want to let the girls out of the shop. i would call just out of curiosity. i woudlnt expect to see the girl however.
5 probably legit would want more info before i booked
6 probably legit again would need more info to decide
7 fake

Help fight caps lock abuse people! Boycott caps lock abusers!

Why do you think 7 is fake, Moebius?

If someone uses a fake pic, wouldn't they use something better?

no price in the ad, lots of caps, cropped picture, all those would make me leery of calling. i would have to check the number at the usual research locations at the very least.

ah. well i wouldn't call her either.. but i'd say the pic is real.

ahh i meant the service offered was probably fake not the picture. not that you could determine anything about service from her ad lol.

oh, you're right, I thought the question was aimed at PICS! my mistake.

well you can't tell anything at all from the pic. Could be her, could be someone else. I'd say the service is fake and the pic could be but you'd never be ever to call her out for it since it is so bad.