This isn't your typical marketing beta, at least according to the sign-up verbiage. "As an alpha tester, you will be asked to focus-test specific game elements, document your user experience, and fill out in-depth surveys each week. Alpha testing is hard work," gamigo says. It's also unpaid work, so only die-hard Otherland fans need apply.
If you're not a die-hard but are still interested in the game, check out our GDC impressions as well as this handy post that collects all of the publicly known information in one place.