[chimeracoder]

Honestly, I just like having them email me when I've unsubscribed. That way, if somebody else does it, I know because I receive a notification.

If I'm unsubscribing from a spammy newsletter, I don't mind them sending exactly one "unsubscribe confirmation" email immediately that I can then have in my records later on in case I forget whether or not (or when) I unsubscribed.

[ceejayoz]

That actually drives me nuts about Mailchimp in particular, and I've seen a good number of folks grouse about it on Twitter. Interesting to see someone having the complete opposite opinion about them.

[TillE]

The only such notices I've been truly annoyed by are the ones that say "now please wait 6-8 weeks for your unsubscribe request to be processed".

Otherwise, it's really a very small thing to deal with. And it can be nice to have that email in your archive for future reference, like if they start spamming you again.

[emn13]

Same here, doesn't bother me either. I think the people it bothers might be bothered partly because they were annoyed at being spammed in the first place, and this is just another drop in the bucket. Sure, it'll trigger annoyance, but the real cause lies elsewhere.