CSS and Web development search engines
In October 2006 Google extended their Co-op platform with Custom Search Engine, which lets anybody create a specialised search engine (and earn money from it if they want to).
I'm aware of three custom search engines of interest for Web professionals:
While custom search engines are an interesting concept I find myself somewhat wary of using them. Not because there's anything wrong with them, but because I can't help wondering if what I'm looking for is on a site that the custom search engine has not added to its index.
Only Ergonosearch has a list of indexed sites. You can see which sites are indexed by CSS Search, but only by creating a Google account and logging in. I can't find any way of finding out which sites Sparkl indexes.
I think giving visitors easy access to a list of indexed sites would remove most of that feeling of uncertainty and make me trust specialised search engines more.
Are you aware of any other Google CSEs related to Web development?