Don't do what Mike Brown did in the above photo.

No matter how much "life is good" at Twitter, they shouldn't rub it in peoples' faces.

As if Zynga wasn't already having a tough day.

It would take A LOT for me to be convinced that life is good at Twitter.

Best ways to evaluate potential hires:

The upshot of this research is that work sample tests (e.g., seeing if people can actually do key elements of a job -- if a secretary can type or a programmer can write code), general mental ability (IQ and related tests), and structured interviews had the highest validity of all methods examined...

http://www.bakadesuyo.com/what-are-the-scientific-time-tested-methods-f

Other research-based tips:

http://www.bakadesuyo.com/who-should-you-hire

Interesting fact -- Salespeople hired based on optimism alone outsold their more pessimistic counterparts by 57%:

http://www.bakadesuyo.com/should-you-hire-people-based-on-how-optimisti

so wrong.