I’ve iterated up the previous example showing how to save data from a Google Spreadsheet, to add in the ability to load the data from the spreadsheet as well. Googles service in impressively fast, and works well with concurrent users. This is however no substitute for a proper database, and shouldn’t be used as such.
Personally i’ve got loads of great ideas on how to use this, things like adding feedback/bug reporting functionality into projects. Clients love the transparency and easy of use of the Google Spreadsheets.
All you need to do is have a php server, download the source code, create a google spreadsheet with form functionality, be sure to publish it as well with the auto republish flag set as well, change to source code with the key from your spreadsheet and do a simple request to find the id of the worksheet.
Here’s the spreadsheet being edited. – http://spreadsheets.google.com/ccc?key=pyxyLmVwUP3OtKbRWR-x3LA&hl=en