[tet68]

Sure hope their math is on the mark, something that
size could ruin your day.

Plenty more where that came from.

[NormsRevenge]

Plenty..

There are currently 1335 known PHAs.
(and I don’t mean in the LA phone book)

http://neo.jpl.nasa.gov/neo/groups.html

We definitely are not alone.

[null and void]

something that size could ruin your day.

If it landed at 21°25′0″N 39°49′0″E, it would make my day...

[CommerceComet]

Sure hope their math is on the mark, something that size could ruin your day.

If it was size of a house when it hit the earth. I'm guessing that most of it would have burned up when it entered our atmosphere. The article did say that it was too small to pose a risk to the earth, so I'm guessing what would have remained might have made a neat little crater but wouldn't have any major effects (unless you were standing at ground zero).