The Google Analytics benchmarking tool which @toomanyairmiles mentions is deprecated and no longer in use
Read this thread about it Evolution of Google Analytics Benchmarking Report
Benchmarking Deprecation FAQ
The Benchmarking report in Google Analytics is being deprecated. This means, the Benchmarking report will not be available via Google Analytics reporting frontend after March 16, 2011.
The purpose of benchmarking is to help advertisers & publishers gauge how well (or not well) they are doing relative to a related group of websites. There are different ways to achieve this goal. The relatively low-adoption of the current benchmarking report indicates that we should evaluate alternative approaches.
Is there a replacement benchmarking service?
On March 16th, we will send out an “Analytics Benchmarking Newsletter” as an experiment to all admins whose accounts have opted-in anonymous data-sharing. If successful, this newsletter will be sent on a quarterly basis.
Will I lose data? / Will there be any changes made to my account?
No. Deprecating the benchmarking feature will not affect your data or your account.