Check out the article:
From the article:
If you're one of the 4 million people who picked up a new Apple iPhone 4S during its first weekend, or if you're waiting eagerly for the next Android smartphone, you probably have an old phone that has suddenly become obsolete for you. That's an expensive piece of technology to dump in a landfill, though! Thankfully, there are several different ways you can get rid of your old smartphone and even make a little money in the process.
Swappa is mentioned as an Android-specific option. The article brought a ton of new traffic to the site. Awesome.