I installed the latest developer build of Flock on my MacBook. The latest changes are really nice. Setting up your services (del.icio.us, flickr, Blogger, etc.) is really easy. You just visit those pages and Flock asks if you want it to remember your info so you can use its tools. The UI changes are also pretty nice. The new My World thing is interesting, though I haven't really tried it out yet. The Blogger is integration is also supposed to be improved, with support for Blogger's labels. I'm trying that out by using Flock to write this post.