Internal PageRank Tool

I found this tool, PageRankBot, and have been playing around with it a bit over the last week. It's a great idea and something that I have been looking for. The tool crawls your site and models the PR flow inside the site. It allows you to 'adjust' incoming PR through external backlinks a creates a visual picture of how your internal PR would be affected. It doesn't capture actual PR but approximates it through your own internal link structure giving a good picture of PR flow internally.

I suppose by stripping out external backlink influences gives a true picture of your internal structure and a optimum view of how your site passes PR. Although it takes into account Meta Nofollows, it does not obey nofollow tags on links, which seems to be a shortcoming.

My success with the tool has been spotty. I've crawled a few sites, some seem to be accurate and some have had issues. I have not tried an extremely large site yet but I suspect there might be some issues there.

The tool was created by Half SEO and he has a good PageRankBot tutorial which should be read while using the tool. I think the original intention was to create something which would help you to pull pages out of supplemental and I'm sure it would work very well for that. Regardless, this is certainly worth a look and some time. I'll be keeping an eye on this and looking out for improvements.