"We're trying not to pull the trigger too quickly, because it's a busy travel time, " said American spokesman Tim Smith.

WSJ: Airlines Cancel Thousands of Flights Before Hurricane Irene

Facebook is testing whether to follow Twitter's lead and allow users to click on a hashtag to pull up all posts about similar topics or events so it can quickly index conversations around trending topics and build those conversations up, giving users more reason to stay logged in and see more ads.

WSJ: Facebook Working on Incorporating the Hashtag

Much of the demo is focused on the big improvements it says it's made to search, with voice search that works across TV and the internet to quickly pull up specific content, content by genre or perform specific tasks like tuning in a particular channel or website like Google Maps.

ENGADGET: Google TV v3 demo video teases better search, mini-guide overlay and tablet control (Update)