"Warren" wrote in message
If someone goes and posts a binary to a non-binary group, it will
automatically be queued-up with the rest of the messages for download.

Also, some people skim through newsgroups by hitting CTRL+U, which
automatically takes them to the next message. This is particularly helpful
when there are a lot of older posts on the server and you don't want to keep
scrolling to find the next unread one. If an HTML or binary post is among
them, the CTRL+U method will download it before the reader is even aware it
is an HTML/binary post.
--S.