It has long been a truth that it was easier to take positions with the front page of the site rather than a bottom. There are of course many reasons why it was so important and it is perhaps that it is generally easier to get inbound links to the home than to get deep links. Not long ago changed this to Google chooses, an increasing number of search results pages folded over higher.

It is possible in the current situation only to speculate on what lies behind and why Google chose to make this change. It may have something to do with the update in April / May 2010 as devalued internal links, it could be that Google thinks they have missed the target a bit with it. It would then indicate that it is now valued in the inter-link again.

Another reason may be that Google realized that it places too much emphasis on the domain, something that Matt Cutts confirmed. This would be a step in the direction of reducing the value of exactly the right keywords in your domain, perhaps for the benefit of keywords in the full URL.

If you are working with search engine optimization, this is of course something you have to consider, you should continue to focus on the home page of your important keywords, or maybe you should think about?