tedster - 7:02 am on Jul 23, 2012 (gmt 0)

As a point of clarity - "host crowding" is the name for the previous scheme, where Google "crowded" all the results from the same "host" into two results, grouped together with one indented if they both occurred on the same page of the search results.

This new kind of SERP is NOT "host crowding" at all, so if you read earlier Google communications on the topic you might get perplexed if you don't keep this in mind.