First off, cannot believe how they can get away with this, but honestly it looks terrible. http://www.wisegeek.com/what-does-passive-aggressive-mean.htm
Home page PR 7. The article to the link you posted is PR3. They are premium publishers. Look at their alexa rank. 1061, wow. Spammy, terrible and whether you like them or not does not matter to them. They must now be enjoying cool ctr.
Urrr, it does have 3 ads per article, plus a search bar on the top, it has 4 ads. GG's max ads number per page is 5(3 ads + 2 search bar?)
Premium publishers has different rules... the rules that normal publishiners follows does not apply to them.. No, not everyone can. You need to be really huge to be accepted as premium publishers. 20 million page views a month was the requirement for premium publishers when i last checked...