It's been a while since I had a website of mine ranking 1st in Google for the term "Tiling Courses". About a year actually.
I wont release figures but I can confirm that like-for-like hit counts coming from searches related to terms such as 'tiling courses', 'tiling training', 'wall tiling course' etc are down by roughly 30%.
Searches are up for 'Tiling
NVQ' and the likes, though not by equal figures.
Take from that what you will, give me a shout if you want more info. I have a vast amount of stats related to such terms dating back as far as 2002.
dan@untoldmedia.com