The reputation number is not there to indicate popularity, although some may use it as such. It's there for people to use as a way of expressing how they feel about the
quality of the actions that the person concerned is doing in the forums. The advice they give, how active they are, the topics they post, and things like that. If the reputation marker was meant as a popularity marker then I would agree with you, and I think mine would be in the minuses as well

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Yep mine is high but I hope that it's high because of the quality of work that I do here at Susan's. most of the stuff that I do is posted for everyone to see in the forums, sometimes it gets me in trouble with the boss, but that's cool, but the not so good things that I have to do is through PM's to members who do not abide by the rule that govern us, and that would definitely win me popularity point

I don't think it's something we should put too much emphasis on the same way as the more posts you make the more stars you get, they too indicate status of some form.
Just my thoughts,
Steph