To analyze Google results on several Google data centers we have developped a free online tool called Google Data Centers Analysis Tool.
Tool Compares Google And Yahoo Algorithms
One of the coolest tools I’ve seen recently for comparing Google and Yahoo results lives over at the blog site langreiter.com.
The Latest Innovation in Search Engine Algorithms . . . User Popularity
For years, the search engines have continued to introduce new factors into their algorithms to make their search results more relevant and to keep savvy search engine marketers from “cracking the system.”