I'd like to get a list of (possible/probable) factors that influence the display/rank of adwords. Please feel free to join in.
Several weeks ago I was searching for widgets and refreshed the first page of results 5 times - each refresh showed a *very* different results from the previous page. Granted, most of the advertisers were the same, but positions changed *radically*, in and out of the blue premium bar, 11 advertisers, 3 advertisers, no advertisers ... you get the idea.
The real question - Why do the adwords displayed vary so much? (I have seen mostly stable results with minimum changing)
Anyhow I got to wondering - so here in no particular order of importance is a start
A: Keyword/s entered by user
B: Mix of Advertiser Match types (broad, phrase, exact, negatives)
C: Advertiser variables - QS, CTR, MinCPC, dayparting, Display Options - ie Accelerated
D: Google PA algo - I think I read somewhere that the premium bar can disappear if you don't click on it (I gather this is session based)
E: Number of advertisers - I think I'm seeing the same advertisers rotated over a couple of pages if there a less than 20 advertisers
Can you think of any more?
Cheers
Why do the adwords displayed vary so much?
I don't see that variety, but I'm sure it's happening. Google has said that they changed the algo they use to display ads to incorporate whether "it" thinks you (as a visitor) want to see ads. So, it makes sense that it "sees" that you haven't clicked, and after a few refreshes it decides not to annoy you with the same ads or any ads at all.
That's one definite factor, that is public.
I'd also say that normally the ads shown exhibit only minor variations. What you say meshes with what I read about the PA bar going away if I don't click on it.
Cheers
