Google is always a step forward in user-centered services and community-enhancing tools. THis one is one of a kind, I think, because it allows us to build our own search engines.
I've just built a small one on VoIP related sites.
At present it features a narrow search in few blogs and landmark sites, I'll be pleased if you drop me a line with the sites worth to be included in the search list, or feel free to add new sources on your own.
The Google Coop search engine on Voip is here
Technorati tags: google, coop, voip, buzz, web20, voice20, search