One thing that caught my attention earlier is that the tag system is rather arbitrary and that there's no guiding principle. I tagged one post OWS but others could tag a similar post with OccupyWallStreet or OccupyWallSt, etc. Or what if there's an OccupyLondon post in future? How do these clearly similar tags link to each other?

Also, what happens if I don't want to see say American football but do want to see soccer?

I really like Metafilter, and there are things of no interest to me there, but the flow is slow enough to ignore them, that curation is fine there, but what about here? It seems like such a different model.

I haven't been here for quite a while and when I signed up first (about 5 months ago I think) the rate of posting was a lot slower, and it's only going up from here (not a bad thing by any stretch). What happens when the stream becomes too fast to follow? And how does the tag system play into this? Is there a genre set of tags that you select and then append your own tag onto that to distinguish it?

wrt the question of what content you don't want, that's fine to an extent I guess as long as the rules are clear from the outset, or even the presence of rules too. Turning around in a week and banning OWS posts would be poor form, but as long as the presence of curation is clear then it becomes less of a problem.

Also, personal preference, can you put the '?' after the add comment button so I can tab to the add comment button quickly? Pretty please.

I like the follow system, but I worry that in the future that some people might slip under the radar. I like browsing hubski/all to see what's actually being posted, is there some sort of useful synthesis of the two systems?

Another usability thing is the ability to edit post titles. Fine now while the site is small, but conceivably a popular post could be maliciously rerouted in the future. Should there be a time limit on the ability to edit post titles?