um ... that wasn't really my point.
In the version I posted, if you type "pm" you get the PerlMonks front page. If you type "pm nodeId" it goes to a particular node.
For PerlMonks this doesn't matter all that much, but for other things (like perldoc or cpan) it's nice to have a good "default" other then whatever the default search is. It also means that if you select that bookmark from the bookmark menu (or click that link when looking at your bookmarks page) you don't wind up trying to go to nodeId "%s"