Rabble

Rabble - a newly launched mobile blogging, newsreader and networking tool.
From Rabble's website:

Rabble enables a new kind of self-expression that informs, entertains and connects people through the media they create. Create your channel and post location-based media - your favorite places, photos or an up-to-the-minute newsworthy event. It's like putting virtual sticky notes on the world around you. Then connect with your world. Tell Rabble where you are and it will show you who is around you and the media they have created. Through bits of location-tagged media, find and interact with other people and get information you won't find in the yellow pages. Part blogging, part location-based personal networking, Rabble connects you with the world in a unique and intuitive way by turning "users" into "producers" and creating a marketplace for mobile user-generated content.

Yahoo says:

The application, called ``Rabble,'' streamlines the now-cumbersome process for publishing text or images from a cell phone to a Weblog. It also creates a way to search mobile blogs for items of interest -- from homes for sale in a particular neighborhood to updated tour information for a favorite band.
...
It combines the social-networking aspects of a Friendster with the enhanced search capabilities of a Google.