Provoke HN: Someone build a *useful* tagging service, pls

Long story short: - Problem: Tagging and up-/downvoting mechanisms as used almost everywhere suck because they're too primitive! - Solution: Do not just count how often s/o tagged s/th as "funny" or upvoted s/th, but save that info including user ID. If user A looks for funny links, tags from user B (who's "funny" tags are highly correlated with A's) carry more weight than tags from user C (who prefers a different kind of humor). - Result: A useful tagging/voting mechanism that won't drag everything down to the average, but is able to identify and sustain multiple parallel "subcultures" with different preferences in the user base! Might help to safe HN, too...