I just love this minimalistic and easy to use program that helps you to have your most used snippets in one place. I have written about it more on the article about other snippet programs. However, after some time it got to my mind that there are not any backup functionality. In my opinion, it is a big disadvantage of this program, but you can create a backup manually.
I have found that Snippely saves its database in catalog on Windows 7: C:\Users\{Your user name}\AppData\Roaming and you can make the copy of this file for some later use. I have tried to reinstall fresh copy of the program and the backup worked just fine.
Just do not forget to create those backups constantly!