I could definitely see myself using this! Great work.
Needs more post types - notes and images are not enough. We need to be able to connect entities and to draw arrows at least, maybe color the notes and posts differently, etc. As it is, it offers little to nothing over a simple google drawings document.
Great way to jot down a lot of things going on throughout the day. Although I'm not sure that my RyeBoard might eventually get a bit cluttered and I might start losing stuff. But I'll stick around to see what kind of new features get added.
For people involved in multiple activities this is great. You can have multiple dashboards shared with different stakeholders.