Topsy launches a mobile search engine with timeline feature

Topsy has launched a mobile social search engine that would work in all modern mobile browsers.

The search service allows you to search the social web (Twitter, Facebook, Google Plus etc.) for any keywords.

The coolest aspect is that it features a timeline setting which enables you to limit your searches to a specific time period.

The service of course also works in a desktop browser though it is optimized for touchscreens.