Bitcoin is down - but not out.
The crypto-currency became a media sensation in the last year after rising dramatically in price only to fall equally drastically as confidence suddenly evaporated.
Since then it has become somewhat more stable, avoiding many of the big rollercoaster fluctuations of its past. Until this weekend, when it suddenly dropped 20%.
So what is the problem with Bitcoin - and can it be solved?
This video explains what's happening to the currency, and whether you should be worried (or get your money ready to invest).