i like eros and tgirl lovers, even craigs list has some ads,i know this sounds crude but if you have a photo with a full blown hard on and your face in the same photo so that we know that it is your cock we are looking at , that is a real good selling point,reviews are also very good but seeing is beliving and i know a lot of guys and tgirls over estimate there size (it is not just the tgirls i have read reviews and been with girls who are no where near the size reviwers have said they where ,like ivy she is only about 8-8.5 inches and all kinds of guys say she is 10 or 11 inches).

I usually only check out eros... I check craigslist, but they never have TS in orlando.
I like to see a couple of pictures. I prefer them to not look too perfect or then I feel they have been airbrushed or edited.
Reviews are important and so is cock size. But the girl has look like a woman or then it's a no go.

I use eros to see who is in town, then cross reference with SER, TER and CL.  One picture is enough as long as its a good clean picture that shows the face and 3/4 of the body.  It doesn't have to be nude either, just an honest representation is all I ask.  My decision is based on reviews or type of service and passability.  Of course having a great face, body, tits cock etc can make it even better.

Eros is a good starting point,especially for girls that tour. I also use regional and local sites. If a girl has her own site that is the best. The first thing I look for is feminity. I want some that looks like a woman, just with something extra. Next is face and body just as I would with a woman escort. If she has a nice body and a face like a guy forget it. I like certain body types so that is important. I generally like large tits, though not the oversize unnatural looking ones. I pay attention to the attitude her ad projects, some can be a turn off. Reviews are important. I check here and ASPD etc. You get a good idea of what she provides and her attitude from reviews. They are a must. I like at least three good photos, nude full body shots are preferable. Cock size isn't that important to me. Many are in the same range so, unless I'm looking for something huge it doesn't made much difference

I look at face and body, other details depending on my wants at the time, and reviews.... reviews.... and reviews.  I won't hardly visit a girl anymore without reviews.