Jeffrey Zeldman:

I want people to use my photos. That’s why I take them. I want that usage to be unencumbered. That’s why I chose a Creative Commons license. Some of the publications and businesses that use my photos make no money at all. Others make a little something. I don’t care either way. That’s why I chose a Commercial Attribution license. The license makes my work available to all publications and products, whether commercial or non-commercial. Fine with me.

But Yahoo selling the stuff? Cheesy, desperate, and not at all fine with me. I pay for a Flickr Pro account, and am happy to do so. That’s how Yahoo is supposed to make money from my hobby.

Exactly.