Oh - come on - my parents played with mercury when thermometers broke all the time. As long as you don't eat it - you'll be fine. It's just another ploy by the trial lawyers - 1 out of a few thousand people has a bad effect because of it, and people go all panicky.
Actually, if it's liquid mercury, eating it isn't liable to do anything. It's such a heavy element that it'll just go right through your digestive system.
The problem comes from mercury fumes. Mercury located out in the open air is liable to vaporize, and gaseous mercury is quite toxic. An exposure to a large amount of it or a prolonged exposure to a small amount of it can cause serious neurological damage.
Correct. And nobody (under normal conditions) will be spending prolonged activity around broken bulbs.