Moderated Distribution Lists - Yes they are still alive and there are comments.
External Blog Post
Tony Redmond has taken on a subject in his blog that certainly seems somewhat exotic in the time of teams. Distribution Lists yes, they are still used and can make problem in moderation.
A discussion about moderated distribution lists was a throwback to the past. You hardly hear much about recipient moderation these days, but it was a big thing when Microsoft added it to Exchange 2010.