Like, a section in the site. Kind of like this:
Most Votes: What are some of the best move combos in Pokemon you have found?
Most Answers: What are some of the best move combos in Pokemon you have found?
Most Views: Can you trade Pokemon from Diamond, Pearl, Platinum, HeartGold or SoulSilver to Pokemon Black and White
Like that? Also things like most comments and stuff.
Blob: also user achievments like best team for each tier or best pokebase answer and question seen as anyone could vote in the past so votes wise it isn't the best idea.
Most amount of points and least :D Most answers and questions.
Like Sam said, most of these things are easily looked up, especially since you just listed them on the question here :D
How to change your username
How to add a user avatar
Why was my post hidden?
The points system
Flags vs Downvotes
PokemonDb Showdown server
Name Origins corrections
Location guide corrections
Type a Pokemon name, type, move or ability to see instant results.