Going to rephrase a different comment I made earlier:<p>All of these stack exchanges seem to be trying to solve the same kinds of noise issues that Reddit's subreddits solve, except Reddit does a much better job. No question in my mind.<p>Thoughts:<p>- Having to open a new account on each site (linked to one big virtual account) is messy. I get why they may not want reputation/badges to carry-over from site to site. Personally I believe doing so causes even more fragmentation and makes the barrier to entry too painful if you have to repeat it across several sites (I'd prefer to see a better mix of carrying over some stuff while starting over with others), but the fragmentation of the login/account itself is what really bothers me.<p>- On Reddit, anyone can open a subreddit about anything. On Stack Exchange, new sites have to be proposed on Area51 before they are beta tested and released. All of this effort so... what? They don't have sites that nobody visits? Would anybody notice sites that nobody visits? On Reddit, popular subreddits emerge organically. Unknown subreddits are basically invisible. It all just works. Stack Exchange should be more of a metareddit (.com). Stack Exchange even has a great page for featuring their sites by size and category:
<a href="http://stackexchange.com/sites" rel="nofollow">http://stackexchange.com/sites</a><p>- On Stack Exchange, if I regularly frequent multiple sites, I need to visit them separately. This results in several tabs that I flip between when I'm in the mood for answering questions. On Reddit, all of my subreddits just feed through my front page, or I can input a custom URL which lets me view only a subset of my subreddits. I would love to do this with Stack Exchange.