You should read my first post on BlogRush.com first!
The click-through rate (CTR) is amazing yet inexistant but did they fail? If you ask me, no the made it BIG! Few tens of thousands links so quickly from main blogs homepages (check Yahoo.com) and you can figure it out. And if you look at the homepage it's made of just images. Few text… they might add it later :)
Now think about it, some major link juice very fast. I'd like a site like that;)
