Most likely not the most appropriate title, but while running Xenu's Link Sleuth I noticed I had a few errors on my site.
One of them was a outbound link to http://themeshaper.com/thematic/ which produces a 403 Forbidden Code. I can only assume this is the equivalent of linking to a 404 dead error page, which is not the best idea. While the page will still return, it does in fact throw a 403 code for me.
Can someone also verify this for fun? Is Themeshaper trying to tell us something? It has to be one of the most popular pages on the site with all the internal links, why let google deindex it? It is gone from the index, no cache.
http://www.opensiteexplorer.org/themeshaper.com%252Fthematic%252F/a!toppages
Maybe we shouldn't be linking back to Themeshaper after all. Maybe 989,388 backlinks (many probably considered low quality) became worrisome? Curious to your thoughts. :)