Jamie and Sam are working on creating HTML emails for all the 37signals products. They setup a project for this in Basecamp, and they're using the newly available comments on to-do lists in a cool way.
There's a to-do for every email template that needs to be updated:
Once completed, the template itself is attached by Jamie as a comment for easy retrieval:
It's a creative way to use comments as a file organizing strategy.
Do you use a 37signals product in an interesting or noteworthy way? Let us know.