ALWAYS BACK UP YOUR DATABASE BEFORE DOING ANYTHING WITH A FEATURE. If you are fuzzy on how to backup and restore a database, give the Backup and Migrate module a try. Don't worry, it's easy, and you'll thank yourself later for using it.

Drupal's Features, is experimental! That being said this feature server contains only experimental features that are tested with very specific versions of their dependencies. If you find a feature does not work for you, please report it on GitHub (where the code is maintained) with the specific versions of all of the dependencies for the Feature. If you are a Developer and are interested in pushing any of these Features further, GitHub is a social place. Just let me know or feel free to fork them.