There is nothing sucky about the stackexchange sites. They are designed to be useful and growing repositories of frequent question and answers. The whole rep/voting thing is just a gaming layer on top to make the process of participation a little more fun but if you just focus on the gaming aspect and take it way too seriously like this guy then you miss out completely.
While it may seem like just a gaming aspect, there are a lot of benefits as you gain more reputation on the site. Unlike many "points systems", SE actually allows you to become essentially a moderator of the site as you gain reputation. Once you've hit a certain mark you can edit, close, delete, etc. I think it's brilliant.
The old forums had the same system so there is nothing new or brilliant going on here, the stackexchange sites just measure things in terms of reputation/votes and the old forums did something similar with posts/replies. The only innovation I see is the automation of how promotion happens in terms of votes/rep.
