For those in the U.S., here's one way to earn a small amount of bitcoin.
This site apparently is still operating and still paying out $1 USD in Dwolla USDs.
Send a text message with a profound message to: 1.515.650.4583
That number is for the site:
Then they will send a $1 Dwolla USD payment to you. You need to sign up for Dwolla then, but it is free and takes just seconds.
But then the Dwolla you got can be sent to any exchange that accepts Dwolla including Mt. Gox, Intersango, Camp BX, Bitfloor, etc. (sign up at any of these exchanges for free too if you don't already use one) and use the funds to purchase BTCs.
This offer might be limited to only new Dwolla users, I don't know.
Here's more on it: