Re:

[Bob Goodwin]

> Please tell us that you did not just blindly click on a link in an email
> with a blank Subject: line?  :-)
>
> David

What can I enter in Thunderbird filters to have it automatically
    delete messages with no subject? My attempts so far have deleted all
    the Fedora messages with "Subject: Re:" even though there was text
    after the colon! Leaving it blank has no effect.

Bob