On a public membership site where anybody can join and therefore, become part of the member list -- it would be useful if members could also have a way to leave the site again and have their profile on the site deleted - maybe with a 30-day delay on data actually being deleted.

Contacts should remain in my contact list as they may be on email lists or have purchased products, so this just adresses the ability to let a user opt-out of a membership site by their own choice.