As you all know, one of the most distinctive aspects of the Flock user experience is our photo top bar. The topbar is great for
1. Quickly dragging and dropping photos to create a photo comment
2. Quickly uploading photos
3. Visually navigating photo sites like Flickr and Photobucket
Some of the things the topbar isn't as good at are:
1. Notifications of new photos
2. Being able to see a group of photos (and not just public photos on Flickr or Photobucket)
Right now, we're hard at work on the next version of Flock. We're working on ways that will preserve the best aspects of Flock's user experience (topbars included), and either solve or create new solutions for some of the areas that need improvement. Part of this is extending and enhancing the topbars (including allowing you to use the topbar to view more than just photos). Look for a more complete blog post about the user experience in the next version of Flock soon.
Here's the real question for you, the Flock community: As we've been working through this process, we think we've come to the conclusion that our topbar (and future topbars) actually should be bottombars. Imagine taking the same functionality and interaction you have in the topbar, and instead placing it at the bottom of the browser. And no, the way you open a bottombar will not be from a toolbar button at the top ;)
What we want to be sure of is this: Are there other uses of the topbar that switching it to a bottombar would break?