Scale and expertise
Carol Bartz says: "Yahoo! remains incredibly well positioned to meet the growing advertiser demand for performance marketing offerings, and no other company can provide marketers with such scale and expertise across search and display advertising."
El Reg says: "Google might argue with that."
I say that Carol Bartz is entirely accurate. Yahoo! is a unique company offering a unique service and employing unique individuals each with their own unique expertise and capabilities. Yahoo! isn't in an unique business, but they do it like no one else does - every other company is either worse, or better than Yahoo! and that's an arugable, debatable opinion, really.