tedster - 11:02 pm on Mar 5, 2010 (gmt 0)
...the lowest being "title tag format and length."
And that is well spotted and deserves to be criticized. I have been doing tabbed browsing ever since Opera created the idea and Google's "information" and "help" pages often have titles that are nearly inscrutable - especially on a tab.
With titles being so important both for ranking and for click-through I find it amazing how awful Google's own page titles can be. Other companies too, especially the larger ones, but Google really does need to get their act together here.