tedster - 3:08 am on Sep 17, 2012 (gmt 0)
Just so no one misunderstands any communications from Google - historically they use the phrase "host crowding" to mean LIMITING a domain to only two rankings. That is, it means "crowding" each host into a small, 2-result footprint.
So when Google people say "host crowding" they meant limiting the number of results from a subdomain to only two spots.
We've been searching to find the right word or phrase for the opposite, and "host jamming" or "host spamming" are two such phrases that members have come up with.