To keep their bikes safe from Beijing bicycle thieves, guarded parking lots are available and -- get this -- fixed gear bikes get a discount.
Some places in Beijing have outdoor bicycle parking for 0.2RMB for a normal single speed (and also fixed gear) bike and 0.3RMB for mountain bikes, race bikes or anything with gears per day.
Read more at Ines Brunn's Trick Bike blog. 0.2RMB is about 3 pennies, 0.3RMB is almost a nickel. Ines lives in China and does bicycle acrobatics. She recently visited the San Francisco Bay Area and performed in Palo Alto and San Francisco.