Got an email yesterday:

For all the existing account:

Fly from SFO, San Jose, or Oakland and get triple credit.
Fly to or from any of 3 Bay Area airports and we'll give you triple Rapid Rewards® credit. Just book your travel at southwest.com and fly between August 26 and October 31, 2007, to earn triple credit. Check out southwest.com to book your travel today.

Rapid Rewards Members, get triple credit when you rent from Dollar.
Now...