engine - 5:26 pm on Apr 17, 2012 (gmt 0)

Twitter Now Allows Platform-Specific Targeting of Promoted Tweets [advertising.twitter.com]

Now brands can refine their reach by targeting users with platform-specific messages across Twitter.com, iOS, Android, BlackBerry and other mobile devices. Meanwhile, BlackBerry users may start to see Promoted Tweets with deals, discounts, news and information from brands even on the go.