Dugger - 4:02 am on Nov 1, 2008 (gmt 0)

I am finding that is some cases my well-linked, well ranked sites have disappeared and some old sites of mine with only one or two incoming links - that have never placed well - are now placing quite well for competitive commercial keywords.

In other cases there has been no change. It is like there is at least two distinct and completely different algos being used.