If I have lots of images appearing tumblr blogs, the sort of tumblogs with very little text just reams and reams of images for people to browse through. If my image is embeded in their site like this :
<a href="http://example.com" target="blank"> <img src="example.com/cat.jpg" alt="cute cat"/> </a>
so the image was a link back to my site. Although there is no anchor text to speak of does Google take into account the alt text of the image ?
Would this still count in Google's eyes as a backlink?