If you are just starting out or just starting to turn a profit, he offers some ideas on growing your business.

Any Hoffman gives details on her process for breaking down PPC data.

Thi Thumasathit talked in length about casting a wide net to get attention and bolster the brand name.

There are a lot of differences between AdCenter and AdWords platforms

When you manage a large PPC account its easy to loose things, including structure. Depending on who you promote it may be unavoidable to have odd structure. However if you have an account specifically for a client Structure can signifigantlly improve quality score!
As always PPC Hero was on top of the subject.
http://www.ppchero.com/the-ppc-audit-rewards-for-a-critical-eye/