It looks Ok. But are there spaces in you image filenames? If so I'd remove them and redo the links leading to them. That will only cause you problems.
You could use more text, especially on your index IMO. That's going to have the most incoming links, so I'd want that to be the best SEO'd page personally.
On the galleries, the top ad text isn't linked, why not? Even if you wanted some unlinked text above the ad, add some linked text below it.
