As a feature request, I strongly suggest a "Top Keywords" widget that would display the top keywords used to reach the blog from Google, Yahoo and Bing visitors. This would probably have a great SEO positive effect.
This widget would be inspired by this deprecated widget : http://wordpress.org/extend/plugins/keywords-widget/
The concept would be : "One interesting thing is that seach engines see the search terms, which leads to more people hitting the pages based on the search terms from previous surfers. If one of the terms is a popular search, it leads to more searches. Very quickly the top keywords are sending you traffic for things that may have appeared on the list accidentally at first. There is a positive feedback loop."
Thank you if you can develop this update !
Webmaster of http://www.DonduSang-Paris.fr