Having all those registry backup files spreaded all over in My Documents folder is not that good, IMHO.
So i have changed the default path in CCleaner.ini to %Program Files%\CCleaner\Backup.
Does work fine, what i miss to make the process 100% automatic is CCleaner automatically
creating this Backup folder at the install.
Another solution, perhaps more complicate (but also more... elegant ) could be add another
option in Advanced, to allow users select a default Backup path. In this way CCleaner itself
could delete its own old/unuseful/outdated backups, without any need to delete them manually.
What do you think?