* The logo is very hard to see. If I'm not mistaken, it's suppsoed to be pressed text on a brown background with a glow around it. It doesn't stand out nearly as much as it should.
* "Keep your ideas on a personal dashboard" has a "Learn more" with an arrow. I tried to click the arrow unsuccessfully. It looks like you have to click the post-it-note. Make the arrow clickable too.
* The idea of texting a note to myself is very appealing but when I click the post-it-note it takes me to something that doesn't really talk about it. I expected to be taken to a blurb about how that works. What number do I text? How are they delivered to me? Etc.
* Essentially the same comment as above for the other post-it-note, Access from anywhere. Is there an app I need to download? Does it work on Android? Etc, etc.
* Don't make me click through to sign up. Instead of an image of your sign up form, put your sign up form on the front page.
Hope that helps. Keep plugging, it's looking good!