Should the AC: Revelations tag be ac-revelations instead of the current assassins-creed-revel? Google doesn't (predictably) pick up on "revel" = "revelations", but easily seems to equate "ac" with "assassins creed". The only questions that seem to turn up when Googling are those that actually use the full subtitle "Revelations" in the question title (which is somewhat discouraged) or body.
To clarify: my point is that I don't think an ordinary user is going to use "revel" when searching for these sorts of questions. Some of the searches ("ac revel") I used were trying to auto-correct "revel" into something else (rebel, reveal).