If you hover over a link in Konqueror, it will display the URL, as usual, and then "(Will open in a new window)". I think this is very nifty, as it notifies the user of this *before* she clicks the link.
Marking as dupe of bug 14027. Reporter: If you disagree, please reopen this bug. *** This bug has been marked as a duplicate of 14027 ***
Thanks, I knew I had seen it somewhere, but couldn't find it in bugzilla.