I would suggest giving a better idea of the product before you sign up. It's just an MVP, so it's not a big deal. Just don't forget that when you arrive at home, you don't know who you're trusting with your identity nor do you know what you're getting into. Give a teaser.
We're actually going the other way on this one. Currently, the site starts with a landing page of sorts, with the links listed in larger type. This was done with the notion of a starting point in mind--like a cover or introduction.
However, we're finding that page really gets in the way when you visit multiple times in a day. As such, we want to remove that obstacle. Soon, users will land directly on the Active Channels list, as you can see in some of the new comps: http://chapp.is/Chapp/83xZXYnEvhbz3xRMs (scroll to the top to view)
Our reasoning on this point is that visitors are pretty much able to see everything that's on the site, without logging in. As such, I don't think we need to explain what they'll find, as most will probably browse before posting or commenting on anything.
