Yahoo has added some very useful filters to their Image Search engine. For instance, you can specify dimensions (height x width) in the search query and it will display only pictures / icons that exactly match your specified size.

This means you can also use Yahoo! Images as an Icon Search Engine since icons are either 16×16 or 32×32 in size and this limit can be set at the time of search.

Then there’s a new "Recent Images" feature where you’ll find n