This is a continuation from
http://searchfeature.com/blog/authority-is-everything/Google assigns certain domain names a high level of authority which enable content on it to rank faster and higher than others. The reason being, when you have a site that has been indexed for years without being penalized, the likelihood of the content being halfway decent is a lot higher than with a lot of brandnew sites coming out.
Social networks on the other hand get that status based on the editing job that they do.
Hubpages and Squidoo do a pretty good editing job. I have had hubs and lenses with low content deleted. It tells me that when Google editors look at those sites, they figure the editors are doing the job that search engine spiders don't do.
That is why it is easy to get immediate traffic thru those.
www.mixx.com seems to rank as well, but not sure if that is going to last.
