Right so I went on an MMO binge 2 years ago and for some reason created 3 more email addresses than I needed, I also wanted to get rid of the one my sister helped me create when I was 10. The only problem is I created my Facebook and Youtube account with what uused to be my main email address that I don't use anymore. So will something happen to these accounts?
You may want to change the email addresses they are linked to incase you forget a password. not sure about youtube, but for facebook you need to add a second email address(one you will keep) make it primary and delete the other one.