[sergiotapia]

Let's put it this way. Working in my country, Bolivia - I used to make $X/month.

Switching to oDesk and raising my rates immediately helped me land $X+400%/month. Immediately. It was just astounding to me. I'm sure I could earn more on other websites, and as a matter of fact I'm currently attempting to join TopTal.com

I've heard great things about that site and the way they operate.

[noodle]

You should raise your rates and get off of oDesk. Though it sounds like that's what you're about to do, with TopTal. If you're a reasonably experienced Rails developer with strong English skills and you're not charging at least 100USD/hour, you're underpaid.