Twitter has just made it a lot easier to find other users with the integration of people within search results.
Twitter has had people search for years now -- it's a useful tool to find friend or brands that you might want to follow. However, it's relatively obscure, as it has never been part of Twitter's main search feature.
Many users have been noticing a new feature when they search for people on Twitter.com, though. Now when you perform a search that involves prominent people or brands (e.g. John Mayer or Mashable), the top three name results will appear, complete with the option to view other name results.
It isn't perfect, though: when I performed a vanity search for my name, the second result was a fake account -- while relevant, it's definitely not me. The "Verified" checkmark eliminates confusion on some searches, however.