Spirit Airlines to charge for Carry Ons that can't fit underneath the seat

For tickets purchased now for travel on or after August 1st, Spirit Airlines will charge $45 for carry ons that are too big to fit underneath the seat in front of you. The fee is reduced to $30 if paid in advance online, and is $20 if a passenger belongs to Spirit's $9 Fare Club. See the April 7th article from the LA Times:

http://www.latimes.com/business/la-fi-spirit7-2010apr07,0,5945292.story

Other airlines will undoubtedly be watching closely to see if passengers accept this new fee.