Swiki

Swikis combine Web crawling with filters defined by site owners and algorithms that analyze user behavior (keywords and pages accessed) anonymously and automatically, re-ranking results based on the community's search actions. Search parameters can be set to include or exclude sites to fine tune relevance or eliminate/censor unwanted URLs.
===External Links===
*Swikis tap communities for search from ZDNet
Category:Wikis
Category:Web 2.0