Oh, it's a known item that periodically the script breaks displaying a long URL instead of the image, and in doing so screwing up the format of the page. It's an issue with some of the images thumbnails. I'm going through finding them so it should be squared away before too long.
I also think the random display of photos is awesome. I've never paid too much attention to the advertising one way or another, so that piece is a wash for me. Chis, it seems to me as if everything you do to improve this site, improves this site. I hope you know it's appreciated, even when we don't say so.