How are these questions off topic?

• http://superuser.com/questions/47150/does-anyone-use-elephantdrive-online-backup-for-personal-use
• http://superuser.com/questions/368225/online-backup-that-keeps-locally-deleted-files-forever
• http://superuser.com/questions/358973/online-backup-plan-for-a-home-office-with-servers

I understand that according to the FAQ "a shopping or buying recommendation" is prohibited.

But are they not questions that relate to super users that are trying to find the best solution for a problem?

If they are considered bad, then what site should they be posted on?