Music giant HMV is the latest high street store to go into administration. This is a full Q&A, which includes whether gift vouchers or returns will be accepted, and the rights of its staff.
Traders may be misleading consumers by not making it clear they have signed up to regular card payments, or that these can be cancelled, the Office of Fair Trading says.
Asos customers were left enraged after a code giving up to 40% off was pulled early, though the fashion firm is giving let-down buyers a new deal in return.
Dozens of the UK's largest online stores have been warned to bring their websites up to scratch so they comply with consumer protection laws, or face action.
Shoppers won't get any undelivered items from JJB Sports bought before this week, and they won't be able to return items or use old gift cards after the retailer's collapse.
Former cabinet minister John Denham is calling for all supermarkets to make prices available online so consumers can make accurate comparisons and monitor price changes and offers.