Different Titletags? Balck Hat SEO? No, it is the power of a DMOZ entry!

So I found a post on Sitepoint, where someone had discovered this anomaly in the search results.
If you search for "on demand guitar lessons" you find a reuslt that looks like this (please do try it for yourself):



However, if you do a search for "best guitar school" you get the same website come up, but with a completely different title tag! It looks like this:



"Wait a minute!" I hear you say, thats a different title tag! How are they doing that? Well, I can tell you now that it is really simple, it is the dmoz entry. The title "personal guitar school" has been dynamically pulled from their DMOZ entry which had that as the anchor text.

So how is this useful? Well is shows us how great it would be to have a DMOZ entry - however that remains someone redundant information as it is still near impossible to get one these days. So dispite the cleverness of this - it is completely useless!