Automatically Unsubscribe from Unwanted Emails with 'Leave Me Alone'
lifehacker.com
lifehacker.com
For example when looking at a subscription it might say "60% of other users unsubscribed from this mailing list".
You can actually see specifically what other people have unsubscribed from.
Probably not such a bad idea if there's some people who would unsubscribe if told everyone else is unsubscribing.
Also % of unsubscribes is only a portion of the algorithm used to calculate the overall score.
The intention is not to say "this is something you should unsubscribe from because everyone else is unsubscribing from it", rather to say "based on our information, this mailing list is lower quality than most others, so you should check if you still want it"