Users will have to see a reason to use hubski over reddit. The decline in percieved quality of reddit has greased the wheels for an alternative to blossom, but reaching "middle reddit" levels is no easy task.

Building the diverse, invested community will be the biggest hurdle in achieving a "better reddit." To do that, more word if mouth (ironically: reddit) will need to reach the people hubski wants to attract.

I use "better reddit" for lack of a better phrase, but really hubski would be taking the better parts of reddit and hopefully leaving the babygate closed to keep a higher quality. Hubski shouldn't just be a new subreddit--or should it?