I woke up at 3:42 AM to find out that we can now put a +1 widget on our websites. Normally, I treat such things with a bit of cautious curiosity. I guess others are more keen on having a -1 button, which could be useful but very controversial.
I put the code, just before the /body tag and then tried embedding the latter portion as a widget. Still no go, I guess I'd need more shut eye for this thing to work.