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i consider the left vertical part of the screen (after days of testing) a very important place for links.
that means, users might just look into the groups and (imho the smartest/more sneaky change of that) into froogle (shopping? why leave google?)
i have experienced CTRs of 5-7% on adsense on the left side of my pages dropping to 1.5-2% if I moved up to horizontal (talking about 30k pageviews a day, so a good statistics base, IMHO)
That *COULD* have a direct monetary impact on the top sites, driving more users into the google universe (with an additional click and an additional page impression of adsense OR with shoppers going froogle).
that is IMHO not a small layout change, that is MAJOR! relating to conversions and CTRs...
I can't see them cramming AdWords up top with this. Perhaps on the bottom?
Well, one more click on google, instead of a result means:
1 more page impression of the Google universe (where adsense is on the right)...
That means, lets say they have 100M SERP views and it increases the CTR on "google internal links" from 1% (those who clicked on the top navigation to search the groups) to 3% who click it then on the left (new) navigation bar, that will "steal" around 2 Million pageviews from the results and add 2 to the internal pageviews...
Makes an increase of 2M more impressions of their Ads, makes 2M less impressions of webmaster sites, which have been clicked before.
Makes 2M less impressions (I know, not all people us it) of Adsense (or other Ads) on other sites, where they earn less...
And now to the "Millionairs" posting from ezgo:
If you mean make 1M in a year from AdSense.
so average. $83333.33/month
Each click usually is from $0.03 to $2.00. Let's assume averge $0.6 per click(I think this is still high) You need to have have at least 4630 clicks/day
If CTR is 1.5%. You need at least 308667 views on your site each day.
I don't know much sites can have 0.3M traffic everyday other than search engine.
Which makes them additional 3M per year... and that is, what I consider MAJOR in terms of a layout change!
If I could make additional 3M with putting the navigation somewhere else, please tell me :-)
Maybe it's just the screen I'm using now (this is the larger of two I use) but there seems to be more white space between the SERPS and advertisements. Perhaps this is setting up the new layout, perhaps I've just got warped perspective now.