The reason I attracted to flock because it have ability to interact with popular social networking services including del.icio.us, Technocrati, Digg, various popular blogging and news aggregation services.

Flock homepage,"my world" tell you when your friend have uploaded video or picture in the "Favorite Media" section. Also, in the "Favorite Feed" you can get instant highlight to all your feed.

http://www.teachme-buzz.blogspot.com/

In this page, you can also access "Account & Services" toolbar which is suprisingly useful for blogger. You can instant access from blog service such as blogger, blogsome, live Journal, Typepad and also, WordPress.

You can download Flock here.