mimmo - 1:48 pm on Mar 4, 2007 (gmt 0)

Personally I think it's purely a money alogrithm. It doesn't matter what your page looks like, or how well it lines up with your keywords. The site that makes them the most money for any particular keyword, is going to get the highest quality score.

I agree 100%

For the simple reason that no algorithm would be able to establish the "quality" of a page for a visitor, by just analyzing the web page, out of context. PageRank shows that the quality of a page has to be established in the context of the web, but landing pages are one-off, often without any referring links to it.

IMHO QS is all about CPC, CTR and historic data.

For instance in our campaign we have:
- simple widgets [QS=Great]
- black simple widgets [QS=OK]
?
all the keywords are on our land page!