A few of my older questions have been deleted. I know they existed but I don't remember their titles. Maybe some of them were closed but with very useful answers.
Is there an authority who can do this without notifying me? If not, why I haven't been notified?
Are my deleted questions backed up for some time period (e.g. a year) or should I make the backup myself immediately I have a useful answer?
EDIT (little off topic): This is another question that has been deleted. This is not my question, but has many interesting answers and I have it in my bookmarks if Firefox. I can't read it anymore. Though I found a copy on stackprinter website which saved it.
EDIT another interesting question that has dead link.