For what it's worth, I second the vote for "PM: Page_Title"
It would give a quick indication that a window is Perlmonks for those like me who usually have several going at the same time, but is still short and sweet like a baby covered in chocolate syrup.
Ok, forget about the baby part.

requisite obfuscation sig below:
perl -e 's;;uoli;;$a=length;y;g-w;e-u;;;$a--;s;j;$a;;print"$_\n";'