Over the weekend, the price of bitcoin dropped by as much as 20%; the price has since rebounded slightly with a current price as of writing of $1,041; the recent volatility is due to disagreements between developers, exchanges and entrepreneurs about the size limit of a block; some want to increase the current block limit of 1 MB; two groups have been debating including Bitcoin Unlimited, who is advocating for no limit on block sizes, and Bitcoin Core, who is advocating to keep the block size as is; Bitcoin Unlimited has recently threatened to implement a hard fork. Source
