[KevinG]

Oh man, look what I started with everyone looking at the wrong site. LOL! Doesn't matter though as it looks pretty much the same.

Anyway, I have NOT seen any substantial changes in rankings, traffic or sales on several sites I manage and/or own in several different niches. Everything is maintaining well, smooth and steady for my sites.

However, in regards to "tweaking the formula", here's how it works which may explain things a little. There used to be big scheduled updates that would happen 2 - 3 times a year and would effect all the results across the entire search engine.

No more.

There are no more big updates where the entire algo changes.

Think of G as actually having lots of little algos for many different web site categories. There are constant "rolling updates" in different market niches going on all the time.

So an entire niche can have lots of SERPS change while there are no changes anywhere else.