Topicle is a search engine community built by users handpicking URLs. The community creates new Topicle search engines for topics. URLs are added to each search engine by users. Those URLs are then rated by other members of the community before being included in the Topicle. Topicle uses Google Custom Search to search the selected sites.

For example, the Web 2.0 Topicle includes reddit.com, readwriteweb.com, digg.com, and others. When searching within the Web 2.0 Topicle, only the 7 “indexed” URLs will be searched. Betaflow is added as a suggested URL, but won’t be include until other Topicle users rate the URL.

The site is an interesting mix of Google’s search power combined with crowd-sourcing. It makes search engine optimization a little less important and all but eliminates the option to spam.

Topicle was founded by Steffen Mueller and Christian Meister. Mueller was a Product Manager for Google, working on Google Maps, Google Web Search, and Froogle.