Originally Posted by DArtagnan 
Hmm, sounds useful.
I have a pretty sparsely populated living room and first floor. My worry is whether it can climb over the small "bumps" in the doorframes.
Bumps in the doorframes is no problem. I have seen it drag itself over stuff that is 3cm high. But my bathroom have a 5cm doorstep out, so it can get in but not out.
It should be said that my livingroom is and have been a nightmare even with a regular vacuum cleaner but the droid actually manages to cover areas that I can't do with ease, like crawling under the TV-bench and under the table. Once I tossed out a few items it will be more effective than me at keeping the livingroom clean of dust.