pdivi - 3:37 pm on Mar 6, 2007 (gmt 0)

keyword's position has anything to do with the QS algo

I believe position has everything to do with QS. From my observations, if the KW averages a 1.X position, G will not touch it.

It follows that I also believe the QS has very little (if anything) to do with relevance, and ad & landing page copy don't explain most QS moves. This is based on observations across several accounts.

If someone has position #1 KWs affected, and does not have glaring quality flags such as search arbitrage or affiliate landing pages, I'll reconsider. But to date, it looks like low position+high CTR=high opportunity cost is the main determinant of QS damage.