What I see as an advantage of Hubski over reddit: Some of the tags on Hubski can become a great alternative to the most popular subreddits of reddit for many certain individuals. #askhubski seems like one of those. I'm tired of all the pun threads that occur on /r/AskReddit, and the same questions that are being asked over and over. However, a disadvantage I see of Hubski over reddit: Hubski is too small of a community. reddit has the advantage of popularity in that it can spawn several communities that are catered to things that you enjoy (e.g. /r/programming, /r/books, /r/netsec).