This simplelist is for those of you who want to save data online and use that in quries and reports. Although databases are a step upwards of spreadsheets, Google Forms is included in this list because it is plainly exciting to use.
QuickBase - one of the pionnering services in this field, from Intuit, the company that sells Quicken and Quickbooks.
Zoho DB & Reports - free - India based startup
Google Forms - free spreadsheet service from Google
DabbleDB - 30 day trial
Blist - you can view other databses without having to join.
This simple list is not complete without your sugegstions.