Flickr, Yahoo as a portal (5th most visited site in the U.S.), International presence and distribution, Yahoo Finance, Games and Mail.
On top of that, Yahoo ain't financially dead a la Nokia and RIM. Yahoo is very profitable, with billions of revenues and net income. I wouldn't write off Yahoo just yet.
If Amazon had developed it they'd have called it 'Data Processing Services' and charged for how many cycles it took up.
1 - http://pipes.yahoo.com/pipes/