I've recently got IBP. I have run my site through it for my keyword and got a score of 20%. I've taken a lot of the action recommended and am up to 60%. Out of interest, I ran the site at no 1 for my keyword though IBP and it came out at 0%! It did show up some possible tricks they use but it scored 0 in every single ranking factor. Surely that makes IBP worthless?!