really - myspace was one community? Forums don't have 'topics'? wtf. This is insane. This is nuts. Reddit wont be around in 4 years. It will be a total joke like all the other online communities.
As to the claim of reddit dying within four years, lol! I'll take that bet.
Forums have topics, reddit doesn't have topics, subreddits have topics.
Why not? It was around 4 years ago, and seems to be more or less as healthy today as it was then.