Bike sharing services and systems What are some bike sharing services out there? I know that there have been some in Europe. Here's wikipedia's entry.

This is one that I heard of recently in NYC.
http://www.transalt.org/campaigns/bike/bikeshare?

I think that as cities make themselves more green, these will become part of the norm like rental cars or Zipcar.

Do you know of any new ones? Hear of anything starting in your city?
Anyone out there that is a member of bike sharing services? What worked and didn't work?
I'm really curious about what can make them successful.

My hope is that this post will generate honest and useful feedback so that companies offering these services or new companies can utilize the info here to improve on current offerings.


Also see: European cities have bike rental stations? on Travel.SE.
Barcelona
Barcelona has had a bike sharing program for about 3 years now, Bicing. Overall it's been a success with a huge amount of people signing up and using them every day.
Things that didn't work:

Bike stations weren't properly designed, it was easy to steal bikes. They have fixed this recently.
The lever to secure the seat was too small and people had trouble loosening it, they've now put huge levers on all bikes
The first bikes weren't at all reliable, for about 6 months I had trouble finding bikes that didn't have one or more of: tyres/brakes/seat/handlebar/chain/gears broken. I haven't used the service much in the last year because I got my own bike, but the times I have they have seemed more reliable.
Bike availability and parking spot availability. Stations that are on the top of hilly areas are always empty and stations near busy areas are always full. Solving this would require a lot more micromanagement of the bikes.
Instead of making an accessible web service for checking bike availability they decided to make an iPhone only app. This boggles my mind.

Other than that it's a great service when there aren't problems (I got charged 20 EUR when either the bike I had used got stolen or their system had a stroke and their records showed me having a bike for 8 hours, when I'd returned it after 26 minutes).
People have criticised using vans to micromanage the bikes, arguing that it offsets any ecological gains.
It initially cost 20 EUR/year, and is now 30 EUR/year. The pricing is:

First 30 min free.
Every 30 min after, and up to 2 hours total, 0.50 EUR.
After 2 hours, 3 EUR per hour until you return the bike. After this happens 3 times you get kicked off the service.
Steal a bike: 150 EUR.