My landart has floated to the top of yahoo image search!

This picture of mine was recently 'faved' almost fifty times on http://ffffound.com (here's the link) which resulted in an enormous traffic increase for the original image on flickr, which, in turn, resulted in better ranking for my image in the yahoo image search results for landart. So I am very very pleased with myself, but also a little mystified; why is it that the images that I am most proud of are half as popular as this kind of thing? Don't get me wrong, I like this image, its just that i've done stuff literally ten times as good, but sometimes it would seem as if i'm the only one who thinks so...