The IntelliScreenX Ticker can be enabled under Settings -> Notifications -> In Notification Center (or if it's in Not in Notification center, turn it to on). 

The idea behind the Ticker is displays new Twitter, Facebook, and RSS updates.  To keep the Ticker up-to-date with only new items, once you view those updates (by viewing that particular page for > 2 seconds), all items for that page will be removed from the Ticker.