bramley - 4:27 am on Apr 7, 2011 (gmt 0) [edited by: bramley at 4:37 am (utc) on Apr 7, 2011]
@snickles : I think there is a limit on the number of terms a page will rank for. Might be 2 word terms or 3 or 4 word terms but it G maybe now chooses the top 2 and diregards pretty much the others. That's my understanding / experience.
This might account for some of the 'mysterious' ranking drops - the page has not been dropped perse, but the limited key phrases assigned for it are not what one is looking at.
Also, I have seen improvements as I made changes, so it looks like some sites are caged for a while to perhaps see if changes persist and are genuine, something like that; needs patience. I think it was Jane Doe who sounded optimistic in a recent post despite not improvement yet - that is right i think. In my case it is quite embarassing really hor untidy my site was previously. Go tidy up ...
If using a CMS (and that's pretty much everyone; certainly all of those 'pandalised' I'd guess), look closely at the pages output and think what you could improve upon
[edited by: bramley at 4:37 am (utc) on Apr 7, 2011]