LOL! I love their short but sweet description:

Red Pen lets you upload your design, share a short URL, and get live, annotated feedback super-fast. It remembers you— there’s no logging in, no project management, no bullshit.

This is the deal: you retain ownership of your uploads. Your data will not be sold or shared. We will never ever spam you.

Because we are not douchebags.

Well-said, well-said.

The beautiful thing about this simple and very useful service is how dead-easy and how obvious it is to use.

There’s something brilliant about simplicity, right?

Done and done.

Check out Red Pen. Brilliant.