I think this could really use screenshots (as above) or some kind of visual tour. Usually if I can't figure out why I would want to use something within 30 sec

I think this could really use screenshots (as above) or some kind of visual tour. Usually if I can't figure out why I would want to use something within 30 seconds, I don't bother coming back. You need to sell the product. :) I didn't even notice the 'read more about Duuble' button until I saw it mentioned by jorangreef above (point 6). It isn't in a very obvious location and isn't particularly eye catching, mostly due to looking like the other buttons and having a small font. By comparison, Springpad has an easily visible 'How it works' button in the top-right corner, next to the create account button (https://springpadit.com/ https://springpadit.com/) and Simplenote has a link called 'More reasons to use Simplenote...' in the bottom-right corner (http://simplenoteapp.com/ http://simplenoteapp.com/). These are much easier to find. Also, I assumed your headings (It's Simple, Private, Posting, etc) were links to more information, since they didn't have any content below them explaining /why/ Duuble is simple, private, etc. In summary, you really need to sell the product by clearly explaining what it is and why I would want it. I think the front page design could use some general improvement, as suggested by jorangreef. Good work so far.