Over at Rollyo we just took the lid off a new tool that enables Firefox (and other Mozilla based) browser users to create personal search engines in a few seconds. No need to join anything. You can choose one site that you search all the time. Or you can include up to 25 sites grouped according to your needs. Just add the site(s) and you’re one click away from having a personal search engine built into your browser toolbar.
It makes a great browser even better.