Flock, the Firefox-based "social web browser" has been updated to 0.60 with a bunch of new features. Among them: drag-and-drop uploading to Flickr, Flickr search by tags or text, a new blog editor with category support for WordPress and Movable Type, support for private online bookmarks with Shadows.com, Technorati and maps topbars, an improved RSS reader, and more. You can check out the changelog for 0.60 here, or you can download it for Windows, Mac, or Linux here.