Busy week at Google. They’ve launched three new services in three days, which are all very interesting for webmasters.
Google Analytics is an advanced statistics service, which lets Web site owners see exactly where visitors to their site are coming from, what links on the site are getting the most traffic, what pages visitors are viewing, how long people stay on the site, which products on merchant sites are being sold and where people give up in multistep checkout processes. This service was originally developed by San Diego-based Urchin, which Google acquired in March, and was previously sold for $495/month, but are now freely available. More info in the Official Google Blog.
Google Base is a place where you can add all types of information that Google will host and make searchable online. You can describe any item you post with attributes, which will help people find it when they search Google Base. In fact, based on the relevance of your items, they may also be included in the main Google search index and other Google products like Froogle, Google Base and Google Local.
Google Sitemap gives you more info about how the GoogleBot sees your site. See which pages has been crawled by GoogleBot, which returned errors, how the PageRank is distributed on all your pages. Furthermore you can see which Google queries return links to your site, and what Google has detected about the content and encoding of your pages. More info in the Official Google Blog and the Inside Google Sitemaps Blog.