Last Tuesday, Google introduced a new version of its popular site metrics tool for webmasters.  Google says the improvements will help marketers know the most effective search keyphrases, banner ad performance, PPC campaigns and e-mail newsletters.

Read Google's commentary here.

On Tuesday, December 12th at 10 am ET, ClickTracks Founder and CEO John Marshall will be explaining the "various types of exits that occur and the valuable information you can extract through proper exit analysis." Marshall will be touching on why tracking exits is important, the different types of exits you should be tracking and how to reduce exit rates. There is no charge for the teleseminar, and registration is available at ClickTracks.

The current issue of Web Marketing Today explains the basics of split testing and answers the following questions: What is split testing? What can it do for you? What is a control? What should be tested? Can you (and should you) test more than one item at a time? Read the entire article at WilsonWeb.com.

The Inside AdSense team at Google has published a tutorial on how to split test different ad formats, positions, colors, etc. using JavaScript and AdSense Channels. View the full tutorial at the AdSense Blog.