I know this was mentioned somewhere in this thread, but I wanted to confirm it.
I had a 6 pack filled using the BMBF method that I left in my car for about 6 weeks. There were some pretty significant temp swings that it was subjected to (probably low 20s to low 60s). I opened one up last night and it tasted both flat and oxygenated (couldn't even finish the bottle).
I had a few bottles from the same batch, filled at the same time, that I kept in my refrigerator the whole time. I cracked one of those open and it tasted just fine.
Long story short, I was a bit amazed at how quickly the quality of the beer can deteriorate, but I have to attribute that mostly to the lack of proper storage and significant temp swings. I was a bit nervous after I tasted the first bottle that the rest of the batch was a waste. However, that theory was quickly put to rest.
Lesson learned: store the BMBF bottles at a relatively stable temperature, and enjoy the beer for weeks, months, perhaps years after!