The question remains also why a section so heavily moderated such as the mining section gets three mods whereas things like bitcoin discussion gets 1 (and that's a global mod so it doesn't really count) and project developement has no mods...
It explains why the Mining board isn't a spam fest.
At the time of posting this comment, of the 39 threads on the front page of the Mining board, 31 of them are locked. Any thread that is low quality or spam is trashed, and any thread that has had OP's question answered is locked. OgNasty's thread is 14 pages, but there isn't a single spam post in it - that would be impossible in Bitcoin or Altcoin Discussion. Dedicated board mods not only help to keep a board clean (obviously), but they also free up the likes of hilariousandco and other global mods to deal with more important issues than deleting garbage posts.