People are talking about Flickr...

"Like all great social networking services, you can add your profile and photo, add your friends, click on your friends to see their friends... but... there is actually a point to it. When you launch the web-based application you get a rich social space. Not a place, but where context is defined by the social interaction. Chat and IM are blended with ridiculously easy photo sharing."

- Many-to-Many