"Larry and a Cat named Dub" wrote ...
Bleachbot
What the heck is it and why is it all of a sudden popping up on my puter
on the news groups?

Can't say for certain, but most likely an ISP has started deleting messages
and for some reason, your ISP picks the notices up as "normal" messages.

In OE, just block the sender: Message- Block Sender

Or create a rule: Messsage-Create Rule From Message-Where the subject line
contains specific words- Click on the blue undelined "Specific words" (down
a little bit)- type "Cmsg cancel"-OK

You won't see them again.

Dan