[jeremydavid]

Yes, you need text and images. The company I work for has been looking for a simple, fast, and good solution to make notes over webpage wireframes. I think this could be it!

[swombat]

Try our Woobius Eye tool, too, it's pretty neat for collaborative visual work.

See: http://woobiuseye.com

And a video of how it works: http://www.youtube.com/watch?v=Vhox59Ia5yc

[jeremydavid]

Thanks for that link. It looks promising, but the canvas is just too small.

[swombat]

Click on "New Advanced Mode" on the right hand side. Big version, multi-page, etc...

[altrego99]

For some reason to me this looks like an Yahoo product, whereas the one linked in the OP looks like Google.

[swombat]

Huh. I'm not sure that's a compliment...

[davidedicillo]

You should check out also http://mysyncpad.com

[jeremydavid]

Being able to type in a URL and then you draw over that would be fantastic too.