Alright, I know people are scared that YU55 is gonna hit us or the moon. I'm not here to say that is or is not going to happen. I am however here to show you how pointless it is to focus on any one rock flying at us. In the last few days we have had a few extremely close calls with space rocks. You should check this site out and see what I'm talking about:
[link to neo.jpl.nasa.gov]

See? There is stuff flying at us all the time. Chances are if you pick one to focus on nothing is going to happen and it will be one you dont see coming.