freeDive from the Knight Digital Media Center helps you make Google spreadsheets searchable
The Knight Digital Media Center is offering a tool called freeDive, which is a wizard to "create user-searchable databases in minutes" based on a Google spreadseet.
Best of all it's opensource and free.
The wizard appears to work best with numerical data, but it's really, really promising for a first-stage project. And again, it is opensource.
See an example, create your own or check out the FAQ page.