Welcome to the Q&A Forum

Hmm... If your stats haven't ever updated, that's very odd. We have a Linkscape update calendar as Casey pointed out here: http://seomoz.zendesk.com/entries/345964-linkscape-update-schedule and those are pretty substantial (tens of billions of pages, hundreds of millions of domains and links). You can see the last few blog posts on the index updates, too: January: http://www.seomoz.org/blog/interim-linkscape-update-for-january End of November: http://www.seomoz.org/blog/2nd-november-index-update-our-broadest-index-yet-and-new-pada-scores-are-live Beginning of November: http://www.seomoz.org/blog/november-linkscape-update-is-live October: http://www.seomoz.org/blog/november-2011-linkscape-update And on and on. Following this category: http://www.seomoz.org/blog/category/38 will provide links to the rest. In terms of link timing - if an important link is created on, let's say January 1st, our crawler will probably find it in a 2-3 week crawl period. After that, it goes into processing for 12-20 days and an index is produced. Within these overlapping periods, you could imagine that in a worst case scenario, a link may not show up in a new index for up to 50 days (at the max) and as little as 14 days (in the best case). We have another index planned in about 10-12 days (as I noted in the January interim blog post), so you'll likely see it there. If you don't feel free to write to help@seomoz.org with details and we'll see what the issue might be. Cheers!

than you all for you response, this is my first time using the seo moz forum and the help i have received so far has been great! The 1st link i actually found because one of my competitors shot up the rankings from 2nd page to top 3, i couldn't work out why but i did notice they had this new link with a pa 90. If i do decide to try the link for a couple of months, i will post the results. Thanks a lot for everyones input!

Ryan Kent has a much better answer than I regarding keyword cannibalization on this Q&A thread http://www.seomoz.org/q/dilution-of-link-juice. You might read that and see if that helps explain things a bit more for you.