mhansen - 2:03 am on Jan 20, 2012 (gmt 0)
From both the user AND the Webmaster perspective, I think this is a good change. There are tools linked within the article to help understand above the fold on your own specific website.
I've personally tired of clicking on a serp and seeing 2, 336x280 ads side by side on a landing page. Matt mentioned this in December if my memory is right.
Edited to add:
I just checked several serps I follow and they still have a lot of work to do. Popular 2-word phrase here in my city... first serp result is a rewrite, with a 728 link unit on the first line, then (2) side by side 300x250 text ads that push the content down the screen.
So much for hope...