tedster - 12:26 am on May 7, 2010 (gmt 0)
I agree that it is important to let Google know what your website is about - of course you must! However, my experience is that Google now picks up the main theme of a website quite well these days - even without Home Page links that use keyword anchor text.
"Home" is the most widespread anchor choice across the web - by far - and I'm sure that this practice jumps out on any link graph that Google creates as an oddity.
Although this practice was very helpful not too long ago, I don't see it as all that useful today. I have heard from a few websmasters in recent months who ran into ranking trouble right after trying to convert to this approach. It was even worse for those who used different anchor text on different pages but in the same spot in the template.
To use the words of Google's Maile Ohye, "The Google search algorithm is a very nuanced thing."
From those who did this in a footer link, I haven't heard of any problems. The problem reports came from those who made a change in their principle navigation area.