We launched Ride the City - Chicago about three years ago. A lot has happened since then and Ride the City has changed quite a bit, too. Well, we're coming back to Chicago now to focus on the map to make it better. We're looking for people to help.
If you live in Chicago or know it well, consider spending an hour to improve the map in any part of the city you know well. We're looking to add missing bike lanes, bike paths, bicycle/pedestrian bridges, and so forth.
For those new to Ride the City, our data comes from Open Street Map, the volunteer effort to map the world. Here's a 3-minute youtube primer on how to edit in Open Street Map to add bike lanes, bike routes, and bike paths.
Give it a shot.
(By the way, any information added to Open Street Map can be used freely under the terms of the creative commons license that allows users to share and share it alike...unlike the terms at Google Maps that you agree to when adding content to their map: they own all legal right, title and interest in and to their services, including any intellectual property rights.)