atlrus - 6:00 pm on Jul 17, 2013 (gmt 0) [edited by: goodroi at 3:38 pm (utc) on Jul 18, 2013]
By now the issue of Multiple Domains Crowding spam has been entirely exposed to Google and interested Googlers.
Together with the issue of Domain Clustering (several results from the same domain), Multiple Domain Crowding spam is killing Google Top 10 search results on first page of Google's SERPs.
Sorry, but this all sounds like sour grapes to me.
The goal of the results is to return 10 useful websites, related to the query. Ownership is irrelevant.
If, let's say 3 websites are owned by the same company and they rank on first page, they are still expected to offer similar content. After all, if you search for "widget", you expect Google to return 10 results for widget, correct? Who cares if 3 of them are owned by the same company, except their competitors, which is where the sour grapes come.
In some rare cases this may not be beneficial to the user, but overall not as big of a deal as you make it sound to be.
[edit reason] Let's not forget the forum charter [/edit]
[edited by: goodroi at 3:38 pm (utc) on Jul 18, 2013]