Hello,

I recentely discovered an ability to backup personal data to online server but I was never surprised when I didn't found a popular service provides filtering capabilities, i.e. all of them they backup all the contents of specific folder.

Are there any free options with filtering?

To be specific, I need following features:

1. Backup to online server.
2. Automatic but bandwidth-transparent backup, i.e. it will backup my files automatically but won't try to do it if I'm heavily using the computer or internet at the moment.
3. Individual filtering settings for folders, i.e. I want to specify which files to backup in every folder.
4. Some free plan (since I'm not going to use more than 500MB of space).