Quote: "I knew it! I immediately got 3 emails from facebook after the download."
That's not spam. It's just facebook emails you facebook notifications - you can disable this. As of delete. You can't! As I said, you can deactivate it. Once it's reached a certain time of being deactivated the account will delete itself.
In
Account Settings
Click on
Security on the left
Right at the bottom of the list it will say
Deactivate your account
Click and follow instructions.
Note: you could just keep it and never use it. Block everything. Disable notification. And never have to worry about it. The reason I say keep it is a lot of free give away games appear on facebook like this, so it's handy to have in those moments.