I keep track of the cyclists going over the Manhattan Bridge every day as I ride over on the subway. Today was definitely a lower number than usual going into Manhattan. Every other day this week I'd count over 20, today only 12. (This is a very unscientific number, and it shows how bored I am that I count the cyclists.) Once in midtown though it seemed like there were a lot more bikes locked to everything available. It may not sound like a large number going over the bridge, but most use the Brooklyn Bridge a few blocks over.
I also bought a lock today so I can join in. I don't own a lock since I never leave my bikes unattended. I'll give it a shot since there is a rack just outside the security desk. Of course I bought the NY Fuggedaboudit U-lock. I also need a chain for the wheels, something just as heavy. I won't be riding with them so it doesn't matter.