The Secretary of Transportation announced earlier this month that airlines shouldn't surprise consumers with extra baggage fees after they've already purchased a ticket:

Passengers should know what to expect, and what to pay, before they buy a ticket or pack their bags, which is why we are calling for carriers and travel agents to disclose baggage fees in their internet and print ads before anyone purchases a ticket.  We also are making it clear that airlines may not impose increased fees or new restrictions for baggage after a passenger has bought a ticket. 

"Blogger's Row and Aviation Announcement" [U.S. Department of Transportation] (Thanks to Brian!)
(Photo: Getty Images)