I’m still trying out Flock some more, but I’m progressively becoming less and less impressed. It has very little more for most people than Firefox (the integrated “social networking” aspects are interesting, but don’t save a lot of time).
The worst thing is Flock’s web site. The forum doesn’t work right (hell, you can’t post about flock with flock. the posting page won’t render) and some links in the site are broken. This looks pretty bad in general. I know it’s only version .4.8, but it doesn’t just need bug work. It needs a greater hook. I’m going to try it out for a while more and see how other things go.