Hey there,
I'm really intrigued by PearNote, and would love to be able to use it. Unfortunately I'm on Windows 7 - any plans to develop a program for us?
The second thing is that I'm an engineering student, and I find most digital note taking solutions lacking in 2 areas: equations, and writing on figures/slides. As it is, I don't see your solution to those two problems. For equations, LaTeX is the gold standard, and if you could implement something like <http://www.sitmo.com/latex/>, a WYSIWYG overlay to base latex somehow, would be absolutely incredible.
For taking notes on slides, this is absolutely vital to many engineer's workflow, and is why I have stuck with pen/paper all through college.
I'm looking forward to those features.
Thanks,
Adam