Rated 5 out of 5 stars

This is perfect for wireframe and prototyping! If you're complaining about changing colors trying to make it pretty then stick with photoshop. Bakas! Before you say its full of bugs get a version that works for your platform. Works perfect on:

Windows 7/Firefox 3.6 @ home
--- this one has a bit more GUI element style for you to use.
Mac OSX 10.5/Firefox 3.6 @ work
--- less GUI elements but keeps fundamental elements

THANKS FOR AN awesome TOOL! A must have for designers and developers!