I've been holding #2 SERP for funny pictures on Google for awhile, also funny pics at around #4 to #5, I finally noticed today I'm ranking 30th on Yahoo for the term funny pictures, I was only near the 100th result, whats funny is I've done no optimizing for Yahoo!, so guess I just got lucky
Don't hold your breath with yahoo or any search engine. My site went down 13 pages for a big keyword on Y today, and a few pages for other competitive keywords i target. Just hope it doesnt happen to you
Yahoo will like similar onpage factors as google only difference is the pages they indexed the links on them if the site you got links from are also in yahoo you would get similar results. to see which links yahoo is counting type site:www.yourwebsitename.com