Mark Zuckerberg is using the classic teen girl trick of letting Facebook pick which photo of him is better

Mark Zuckerberg gave a big talk at a university in China this week, but there's a problem: He's not sure which photo of him is best. Is it the one where he's looking bold, like a tech visionary? Or is it the shot where he appears smiling and jovial? He's not sure, so he's letting his Facebook friends decide:

Of course, Twitter has a feature that could really help him out: