As Parkour has been growing in popularity, I urge everyone to look through this short page of reasons, and browse some of the external links to some of the other anti-competition parkour groups, articles, and web sites. Check it out:

IrvinePK is AGAINST Competition

Le Parkour, the obstacle oriented acrobatic art that has swept the world in the past five years, has hit the OC! Welcome to IrvinePK, a community site where you can meet people who have trained for years or who are just starting, where you can get tips on techniques, or just chat it up with friends.

IrvinePK is also the site for a local parkour team, iPK; a dedicated core of traceurs who train regularly in Irvine.