Google Maps are popular, and they allow you to add your business (or in our case non-profit) for free. When you do that people can just type in your organization's name and find you and all your contact info.

For example here is the listing for the Salt Lake City Bicycle Collective: http://maps.google.com/maps?f=q&hl=en&q=salt+lake+city+bicycle+colle...

To add your Community Bike Shop use this link: http://www.google.com/local/add?hl=en&gl=us