"debating how low the price can fall before the currency is declared dead"

Bitcoin can still be use for payment regardless of its value. The only thing that will happen if the price gets really low is we'll lose some people who were in it for a quick buck. Whether the value is $30 or $0.30, I can still buy some and spend some. As long as people own some and there's a reason to move them around, bitcoin will live on.

I just wish it was easier to find stuff you actually want to spend them on.