• Users can be reasonably expected to browse a landing page before committing to signing up or demoing software, but they can not be reasonably expected to sign up or go through a series of pages to then see the pictures and cool reasons to join
• Corollary to my first point, this isn't "cool" enough - by that I mean, NewsBlur for example has a vibrant, expressive, slick landing page. It also details much more information than this landing page does. It gives readers an incentive to actually sign up and check out the service, if not use it completely. This does not give solid reasons that differentiate it from competitors
• Segue from my last point, what's the wow factor? What's different about Swarm that competitors like NewsBlur don't have?
• What are you doing that shaves off the disadvantage of being a late entry to the race to replace Google Reader (by several months)? This is a not insignificant harm to your traction potential if you can't figure out a core competency or feature the other competitors don't have. It will be very difficult to displace NewsBlur and Feedly at this rate.
This isn't meant to discourage you. Just wondering.