Chevy and xBox Promoting on Twitter

Chevrolet recently appeared in a targeted paid Twitter promo as the top listing in the site's "Who to follow/Suggestions for you" section, following up Xbox's and Rock Star Game's appearances earlier this week, reports ClickZ.
The ads, from about 40 brands according to a Twitter executive, "are served based on users' individually shown interests via an algorithm."

ClickZ used an excerpt from Twitter's blog to explain how the ads get targeted:

"Promoted Accounts are suggested based on a user's public list of whom they follow. When an advertiser promotes an account, Twitter's algorithm looks at that account's followers and determines other accounts that those users tend to follow. If a user follows some of those accounts, but not the advertiser's account, then Twitter may recommend the advertiser's Promoted Account to that user. For example, a lot of people who follow several gaming-related accounts also follow @xbox. If someone follows gaming-related accounts, but not @xbox, Twitter may recommend @xbox to that person."