Yahoo! Site Explorer

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As mat mentioned earlier today, the Yahoo! Site Explorer "coming soon" page has been on the blink, but now it's live. You can traverse the pages Y! has indexed of your site, or your competitions, and follow "explore url" links on each result to dig further down.
I can't quite see why Barry and Phoenix are so excited about it though. Perhaps someone can explain what i'm missing?
I can see how it might be useful find all the pages on a site with bad navigation for example, or perhaps to troubleshoot why Yahoo has indexed so many dupe urls but other than that, isn't it just a simplified version of tools that already exist from the main search?
Possibly im just being thick, you tell me...