Superb plugin! Best one I've found.

This plugin is excellent. It is easy to use and makes thumbs look really great. I looked around for ages and tried various options, but this one was the best! I’ve been using it for about 2 years now and as long as it exists, I won’t use another one. Also, it works seamlessly with Simple Lightbox, which is a real bonus! You really should consider donating to the plugin author, because he’s done a fantastic job.