I've met the people at Footnote.com at several conferences, and they are continually bringing new resources online.
To learn about new resources as they are added, go to Footnote.com and sign up for Footnote's alert service.
The site has now announced that researchers can create their own projects online at the site.
Each time, I've searched the site, I've discovered fascinating records which focus on individuals who served in the Revolutionary and Civil Wars as well as my 20th century Eastern European immigrant ancestors. Some 20 million original documents are now available and about 2 million are added each month.
In addition to saving the documents you find, visitors can now also upload original images and documents to share with others interested in the same names or locations, thus aiding collaboration among more researchers, who may each have a piece of a larger puzzle.
There are tools to make your original uploaded items searchable to other researchers. The only limit to this great idea is your own creativity and Footnote's resources - which increase daily.
If you'd like to learn more about this resource, you can read about it here.
If you've checked out Footnote, set up a project or have comments or questions, I look forward to hearing from you.