Way back when (about 6-7 years ago), I was an avid member of The Hyphen Site. It was a great resource, and its community had a lot of charisma. For example, the "Lounge" area was often hilariously geeky. I feel like it was way ahead of its time in terms of adding a "game" layer (points) to encourage answers.
But I stopped contributing when they did a big commercial-looking redesign (and so did a lot of other members). Since then, they also ceased to be a convenient resource because of the requirement to register to see answers and because of the distracting ads (yeah, yeah: Google cache / free registration / scroll to the bottom). In my mind, The Hyphen Site failed. No one at my workplace treats it as a valuable site.
Stack Overflow is similar in concept to The Hyphen Site, but I'd hate to see Stack Overflow follow in The Hyphen Site's footsteps. How will Stack Overflow succeed where The Hyphen Site didn't?