You can now get related web results next to your own enterprise search results according to Google Enterprise Labs. I wonder how long it will be before some similar feature is added to Google's main UI?

http://www.google.com/enterprise/labs/images/rel_web_rslts.jpg

And how would you apply this feature in the context of web search? Results from a custom search engine you select?

Linkage:

http://googleenterprise.blogspot.com/2008/01/related-web-results-launched-on-google.html

Could apply to CSEs you create or "subscribe" to when the "subscribe" feature becomes available.