Came here to say the same thing. It seems like a complete oversight to not even mention reddit, but bring up platforms like Yik Yak.
For my 2 cents, reddit's model is absolutely the road forward for long-term sustainability below the Twitter-Facebook level. Subreddits give the ability for the larger community to grow horizontally in a perpetual, organic way.
Barring any really site-wide admin screw up, reddit will continue to enjoy its position. It's already weathered enough turmoil and scandal that I don't see it ever going the way of Digg.
For my 2 cents, reddit's model is absolutely the road forward for long-term sustainability below the Twitter-Facebook level. Subreddits give the ability for the larger community to grow horizontally in a perpetual, organic way.
Barring any really site-wide admin screw up, reddit will continue to enjoy its position. It's already weathered enough turmoil and scandal that I don't see it ever going the way of Digg.