Just because it's free doesn't mean it's perfect. My parents in law had one fitted which turned off the tv, sky and video recorder. It was such a hassle waiting for everything to re-boot that they have now stopped using it.
As for the water widget - just take a shorter shower it's much less messy.
Seriously though - I'm sure the gadgets will be OK for some and not for others. They are free so give them a try and you never know.
I also think the other replies were a little tongue in cheek as per norm for the forum