FeedPress, an excellent, feature-packed FeedBurner replacement for counting your feed subscribers, can automatically save a daily record of your stats to Dropbox. Just sign in and go to Settings > Dropbox to set it up.
You May Also Like
How to run a small social network site for your friends – Darius Kazemi
It’s easier than ever to create a small community for your friends, family, or organization that stays as private or public as you want.