taberstruths - 9:41 am on Jul 6, 2013 (gmt 0)
I would never link these for the sake of PageRank, and I wouldn't interlink the two sites with global footer links.
Would you please elaborate why you would not use sitewide footer links? After looking at Google, they not only have sitewide footer links to their other properties that are unrelated to search, but they have upper navigation links to the some of the same unrelated properties.
I then looked at Amazon. They have a huge list of sitewide footer links to all their properties.
Microsoft has footer links on each properties homepage to every other Microsoft property.
Yahoo has either sidebar or footer links sitewide to other properties.
I am not saying you are wrong. I am just wondering why you feel this way when the top sites are doing different.