Seems like I've got travel on the brain today. A couple of months ago, the New York Times ran a piece highlighting several online services you can use to find parking specials near airports and hotels. They included:

• Park Sleep Fly
• ParkingAccess
• Long Term Parking
• Airport Discount Parking

The piece also mentioned several frequent parking programs for dedicated chains:

• AviStar
• Parking Company of America
• The Parking Spot

What have you learned about airport parking? Any tips and tactics to share?