A recent post in Webmaster World has confirmed suspicions that Google has downgraded the positions of big sites. Pros are reporting that their SERP's (Search engine ranking positions) have fallen, despite their backlinks having exploded.
By the way to find out your back links in Google you can use the Google Bar, or simply type into the query : link:http://www.yoururl.com
However, that often will only list sites page rank 4 or above.
So a better way is to type:
This will net you all the backlinks and sites that mention your site, other than your site's pages.
The best way to find out all the links that Google has is to go to Yahoo and type: link:http://www.yoururl.com
Since Yahoo has most of the sites that Google has, it is a good bet that Google knows about these too.
In other news, I found Forbes release of the most expensive houses.