The first one, is If It Was My Home* which lets you put in your city and it'll overlay a black spot the size/shape of the oil spill. Most likely, it'll appear huge and crazy insane, like how it covers a few entire states in this one:
And the second, is of this map which shows a comparison of the world where previous oil incidents have occurred with their corresponding sizes.
*I'll pretend that it doesn't really bother me that,
grammatically speaking, it should be "If it *were* my home"...