I recently looked at the meta.math.stackexchange.com and found the second anniversary was celebrated. As in the last year's Happy-Birthday post (linked therein) , some people declared the addiction to the site.
My question is: What kind of addiction is this?
Certainly some kind of internet addiction, combined with a good portion of gamification, represented by reputation, badges, ... But in this case, I think there is also some kind of altruistic helper-syndrome.
Does this make math addiction a good one? Are there examples of helpful, let's say in a social sense, addictions?