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After the new Activity feature on bitcointalk.org Hero and Sr Members has a value.
Before that rule most spams and trolls where getting the Hero and Sr tags and those tags where worthless.
Now you have to work hard to get those cool tags.

Tie it to current fiat price, and adjust it every time fed prints new money.

Existing participant (Ripple signature added on 6th June), changed to Inputs.io signature and wallet address today.

r96p7fi7pFksFKnqNLm7oF5HH2DzN4Q2FX

As Bitcoin is (relatively) cheap and as it is not (relatively) as fast growing as Apple (was), it is not difficult to do predictions.
First, it is down, and it will for some time. If you have experience at FOREX or stock market, you should know that summer is generally slow. Accept it, there will be no "Bitcoin hits 10,000" till at least September.
Second, Bitcoin does have fundamentals, you know, all those supply-demand balance things. And at its peak it was overpriced.
Third, number of Bitcoin awared people is going up (3 out of 15 according to my personal surwey among people with University diploma), and either is the number of stores that accept Bitcoin (1 of what? a million?). So there is a huge promice for it going up, unless you-know-who interferes. So it will fall to either 60 (50% drop) or 30+ (62% drop) and go up, either slow, or - if something happens that makes people feel uncomfortable holding "real" money (Cyprus ver. 2.0) - fast.
Nothing to worry about. Imho.