We all know Reddit's a cool source of traffic.
No doubt about that.
But there is one serious problem with Reddit as a whole/as a business.... it is TOO DEPENDENT on its user base to remain relevant.
The current drama it's facing (see
Is Ellen Pao snafu beginning of Reddit?s end? - MarketWatch ) threatens to turn Reddit into another Digg...
You remember Digg, right?
How do you walk the tightrope between extreme cult popularity, monetization, and minimizing abusive behavior?
Whoever answers that will nail the space Reddit, 4chan, and others are in.
Another reason why Digg died: the rise of Facebook and Twitter.