The gulf has had a few million gallons a day in seeps for millions of years, and its all natural, and naturally processed.
Corexit, or shampoo, broke up the already LIGHT oil [bacteria doesnt like the asphaltic oils as much] stopped the clumping, and gave a huge surface area for the bugs to feast on.
4.9 million gallons in the gulf is about one teaspoon in lake Tahoe.
BP did a great job, much better and faster than the Japanese dolts.
BP is paying now for the perception of damage, like your posts that scare people into not eating the food. And the locals do not want the BP feed trough to go away.
The scientists trying hard to impeach BP are rather coming away impressed.