Weezat

Weezat is a free socializing platform that works by SMS messaging on any phone.

Weezat is a free location based and granular search service based around SMS. The service allows users to check-in to venues around London (updating their friends of their location) and perform granular searches for specific things they're looking for, all via SMS from any mobile device. Users send a message to Weezat informing them of their location and Weezat communicates that message to the users' friends along with related information. There are lots of other features of the service but you'll need to contact them team to find out more. Weezat launches in early 2010. http://www.weezat.com