I don't mind them - it's good to see some activity and I've forwarded two posts to others. One email a while back lead to me unexpectedly selling a bat bike, so I'm biased. :)
However, sales emails aren't "announcements" which was the idea behind this list...important track notices (closures, events, etc.). Instead there's a bvc-discuss list for that kind of thing...it just never caught on.
Can someone with admin verify the "discuss" email address and post to announce so people are reminded and can start using it? If you don't want to "discuss" stuff...rule it to the trash. :)