I have added some Google blogs to the Blogroll that I find interesting and useful for maintaining and improving this website.
I use the free Google Analytics service to analyse the web traffic we get; it includes a great dashboard overview report that shows a map of where the site visitors are in the world. Google has a blog for their Analytics service at http://analytics.blogspot.com/
I have added Google Adsense adverts and referral links to the site to give visitors access to some useful services and products. I have deliberately made the adverts fairly unobtrusive so they do not distract your attention from the main content on each page.
The free Google Webmaster tools and the Google Webmaster Central blog give a very useful insight into how the GoogleBot crawls and analyses this website. You can see if there are any problems, how the content is served, change the crawl rate, and many other statistics. All this helps a webmaster improve a website.
Google Research keep finding interesting ways to analyse data and improve search technology, machine translation, and many other areas.