Typically, one with an exceptionally above-average interest rate, or one with a bank that has more debt than it can cover with other customers money. Beware of complex products like an account tied to the stock market, or accounts where you can't get the money out easily if you need it in a hurry. Don't use internet banks you've never heard of, and don't take out an account with the 'business' you just got an interesting spam from!!
It's a bank account opened for a business that is a high risk (high possibility of failing), or for a person who has bad credit - depending on the bank.
hmm!!! [link removed]