Yeah, we're wrestling with the best way to handle this right now. On one hand, retweeting and repeating tweets is a perfectly acceptable -- and standard -- way

Yeah, we're wrestling with the best way to handle this right now. On one hand, retweeting and repeating tweets is a perfectly acceptable -- and standard -- way of "voting" via Twitter, and we want to respect and appreciate that. On the other hand, apps that send out links to their app liberally should probably be punished. There's obviously a balance to be found somewhere in the middle. Our model of weighting scores based on users and their friends/followers counts helps out somewhat -- most people who are 'popular' Twitter users are less likely to spam their followers. A couple ideas we've had -- and we'd certainly love any feedback -- are: 1) Anytime we see multiple tweets following the same pattern, discount everyone but the first by some weight (say, 50%). This will keep them relevant, but dampen their impact. 2) Keep a list of API clients which are known to be in-app clients, such as MGTwitterEngine, and either discount their weight or remove them entirely.