Quora's value comes from the quality of the people on it. There is very little that's exciting about them except the people they've been able to attract initial

Quora's value comes from the quality of the people on it. There is very little that's exciting about them except the people they've been able to attract initially. As the site grows, the density of interesting people will drop and the noise will increase, getting worse the more mainstream it gets. Eventually it will be a slow Yahoo answers.