That's what I get for trying to describe a longer algorithm when I don't have time. Which I don't. Ignoring the query string is only done when comparing the t

That's what I get for trying to describe a longer algorithm when I don't have time. Which I don't. Ignoring the query string is only done when comparing the titles. If the initial section of the URL matches and the title matches then it's almost always a duplicate, and I only say "almost always" because there's a chance I'm wrong when I say "always" - I've never seen it. But nothing's going to be done, and I don't have time to implement anything more robust than the quick hack I've done for myself, so I'm not going to get involved.