What started off as an experiment with jlord's sheetsee.js powered map, Hack Spots, has become an all out exploration of the power of sheetsee.js!
Google Spreadsheets are a great low-overhead database. Sheetsee.js helps connect that data to your website.
Look, I could go on and on about the awesomeness of sheetsee.js - but the best course of action would be for you to go and play around! Check out the docs: Sheetsee.js