at least the text can be easily read and is not too jarring to the eyes.

My vote for worst sites are those that have tons of fine text in pale lavender against a black background.  You can to blind trying to read it all.  Often you will find text that overruns other text

The second most annoying think about some sites is the inability to go from one page to another without a long transition.

no flash, just overlapping blur.

I totally agree about the "cookies" issue, and the opening screen was pretty annoying, too.  It's good that they do provide pictures of most of the ladies, and while it's a nice idea to give each girl her own page (but have thumbnails of all her pics on the main gallerypage), the descriptions could be a little more informative -- I really don't give a damn about a provider's astrological sign, and what the hell does "Special: GFE" mean?  Also, things like "available some days and nights" isn't helpful; if the provider's availability changes, then post it when you know -- otherwise, it seems like you're dangling her out there as bait, even though she might never be actually available.  The final thing that bugs me about this site is the massive number of spelling mistakes and plain old errors -- a brown-haired woman is not a "burnett", and if your "touring rate is "+$250.00", then it damn sure isn't "slightly higher" than the regular rate.

Things a site ought to have...
* Accurate photos of the provider.  Face pics would be nice, but I understand if someone is uncomfortable with providing them. Let the reader know how recent the shots are.
* Easy navigation from anywhere in the site; don't make me go back to the mainpage every time I'm done with one of your other pages.
* Complete information about rates; it pisses me off to get told on the phone, "Oh, there's an extra charge for that, even though it's not mentioned on my page."
* Some way to let us know if the page is current.  I've found way too many pages where, when I call or email, I'm told that "I stopped seeing new clients" or "My hours of availability have changed."
* Some sort of information about what services are offered.  It doesn't have to be explicit, but if your ass is a no-go zone (as one example), please find some way to get that information out there. Saying "your enjoyment is my goal" is nice, but ultimately meaningless.
* Make it readable.  High-contrast text color against your background is important, and excessively flowery script is hard to read.  Also, show links in a standard way; having links that only reveal themselves as links when you mouse over them is majorly annoying.

KISS

Well, it beats the average "under construction" page...

Nothing else gets my vote.