JS_Harris - 5:06 am on Mar 31, 2010 (gmt 0)
The problem is being over analyzed. Splitting pages helps with number of pageviews but not revenue. Instead of trying to explain why...
Have you ever seen search results in which multiple pages of the same article rank #1,2,3,4...etc?
Didn't think so, and people reading every page won't be clicking your adsense multiple times either.