On my Rootdig blog, I recently mentioned that users of the free War of 1812 pensions at Fold3.com could help with that project in ways other than giving money. The pensions are only being indexed initially by name of pensioner and widow (if applicable). Users can create annotations for other names mentioned in pension files they use in their personal research, thus increasing the number of names that are indexed and searchable.
An additional benefit of creating annotations is that it forces the researcher to read the entire pension file.
And sometimes the best discoveries are made when a thorough reading of a record is done. Annotating a file may help you as well as helping someone else.