Google is by far the leader in traffic online for searches, so it is helpful to know how they are looking at pages and what they are up to. They actually provide a wonderful BLOG for webmasters so you can keep up to date on changes and make sure that you aren’t going to fall into the Penalty Box!

http://googlewebmastercentral.blogspot.com/

Some of the posts are a bit more on the technical side, but please feel free to read through the ones that are of interest to you as there are some helpful posts. Enjoy!