Some of these have already been mentioned, but I'll go ahead and say them again.
1) Change the permalink structure so that you get some keywords in the post url
2) Link the big pics to a tour
3) More text on each post
4) Better post titles -- for instance,
Yes, We're Posers could have better been called "Me and Brook Little are Posers"
5) Add more categories with girls names and/or descriptive keywords
6) Edit your
About page
7) Link to a site in each post -- for instance,
No Tan Lines doesn't have a link to anywhere
8) I would make the banner spot in the right sidebar a rotating banner spot with more than one ad queued
The usefulness of the Tweetmeme and FB share buttons is debatable. I've found that people aren't likely to share links they come across on a porn site -- especially on Facebook
Something more effective is having a Victoria Summers Twitter profile and using WP to Twitter to push each update to the profile. It really works best if there is real Tweeting on the Victoria Summers profile though.