Despite the MSM hype, Flock doesn’t really have any features that are worth abandoning the better-supported, more stable Firefox to obtain. Since Flock is based on the 1.0.x Firefox codebase, it uses an older version of the Gecko rendering engine than Firefox does. The bookmarks handling is simply defective (bookmarks that you can’t access without opening a separate webpage… nuce), the blogging tool is unable to support even basic features like Categories, and when you take out those two there really is nothing which Flock does and Firefox doesn’t. Unless the development team comes out with something spectacular in the next version or two, there is really no reason for this fork to exist – the Weblog Tools Collection has a less critical (but still not glowing) evaluation:
I believe that Flock is a good idea but the need is too fragmented. The number of people what would want the gamut of features that Flock offers from within their browser is not enough to employ 13 people (I think) on a full time basis.
That being said, I am sure that Flock and its team has a lot of talent and good ideas going for them. I would just need to be really razzled and dazzled for me to switch to another browser besides the Fox.
Basically, Flock is caught between the tech-savvy users (who want decent features and stability) and Flock’s professed target market – people who want their browser to be ‘social’ and don’t want to have to download Extensions to get such capabilities