If you don’t frequent browsershots.org you should be aware that they have released two new and very useful features. First, you can purchase priority processing so that your screenshots are processed much faster. In addition, the source code is now available for download. If you are interested in configuring your own Browsershots environment locally, I’d highly suggest it if you are in the field of QA or HTML development.
For those of you who aren’t familiar with browsershots.org, it generates screenshots of web pages in a variety of different browsers on multiple platforms so you can ensure you visitors are seeing page designs as they are intended to be viewed.