If you've ever viewed the stream of Tweets in a Trending Topic on Twitter, you've no doubt seen your share of spam. Twitter is now testing improvements to trending topics in order to get rid of the spam.
Twitter says they're focusing on identifying high-quality Tweets, but didn't go into detail. They also said you probably won't notice much change right away, but assured that small steps are being taken.
It's good to see Twitter taking on spam. No doubt spam is something that killed MySpace's popularity, which led to the rise of Facebook and Twitter.