Really, people. If I tell my rep that I will not be renewing, most renew-now messages stop. This is not the case with with the list servers. The ACM Bulletin, TechNews, and whatever else you may be subscribed to will continue on their merry way.
At a certain point, this becomes spam. If, after all, I regarded those lists as being extremely valuable, I would likely never have left ACM in the first place.
There's a lot going on right now. which is how it comes to be that my first post of the month is on the 24th. Over a month since my last post. So I have to regard ACM mail as something that should have vanished at the end of last month. Just random stuff that I have to send unsubscribe messages to.