Critical Manners is a thing of the past. The San Francisco Bike Party has the same mission of courteous cycling, more people showing up, and it's just plain fun. If you like Critical Manners you're going to LOVE the San Francisco Bike Party. Check them out here: http://sfbikeparty.wordpress.com/
The ride is extremely well organized. Big ups to the organizers!
Ride Safe! See you at the Bike Party!