nice idea. ideapaint has been around for some years now. at our office, we gave it a thought.

pros:

- biggest possible room for your ideas (your walls)

- that's it - but the above is a big one

cons:

- toxic

- pain in the ass to get on the wall

- uncleanable since walls are not flat

- even bigger pain in the ass to get it off the wall once you change your office location

also:

we compared the cost/m² and it turned out that ideapaint costs more than regular whiteboard (at least in Germany that's the case).