Really liked the idea - but the practice revealed that it searched and found mainly American sites - well in my case 'children's book reviews" it seemed to be all American.
It also didn't say how many it had found which was annoying as I trolled through page after page.
So I'm not sure yet how different it is from doing a google search.
When I registered I was then invited me to enter the url s of the ones I preferred - too much work! May as well just keep them on another site I've already established ..........
Still I will go back and fiddle with it later as there do seem to be some useful features -like being able to attach urls to your own scroll bar and to do it from anywhere - just too complicated for me to absorb all at once at this time of night.
Oh dear, could now become an image freak.