lorax - 2:52 pm on Nov 8, 2012 (gmt 0)
considered low quality by ... Google
Why would they consider them low quality if your users find those sites useful? That's the point of this ranking system.
The sites you link to are measured for user interaction in addition to their own ability to rank. So if someone clicks on a link on your site and uses the site you sent them to that's a plus for you - not a negative. And you get bonus pts if that site has authority ranking. Simplified but that's how I read the patent.