This Business Week article has a bit more substantive information about what the Flock browser is and what it will do:
The Flock browser, which is expected to be released to the public in test form in about two weeks, does everything a regular browser does, but with several important additions.
For one, it makes blogging a snap by eliminating the need to do arcane coding in order to post, change fonts or add photos. Right click the mouse on a Web page, and a blogging wizard comes up that automatically creates links, citations, and quotes that are ready to insert into a blog. A horizontal bar on the browser also can load photos from the photo-sharing site Flickr, so they can be simply dragged and dropped into the blog post.
Moreover, Flock makes it easy to create online bookmarks for Web sites. Visit a Web site and click a “+” button on one of the browser’s toolbars, and that site is saved to a personalized list on the social bookmarks Web site http://del.icio.us./.
Those bookmarks can be tagged with useful descriptions and shared with others. Flock also lets people create watchlists of people whose bookmarks they like and form groups with people who link to particular tags. Flock also keeps a history of every Web page a user visits, so they can be found easily later.
I can’t wait to get my hands on this and see how it does with all of the ‘stuff’ in my own infocloud.