Topcashback

A security glitch at the cashback website Topcashback has caused hundreds of users to be 'partially' logged in to someone else's account over the past month, MoneySavingExpert.com can reveal – with usernames, shopping history via the website, earnings and some email addresses viewable.

Users of the Topcashback website have less than two months to swap their earnings for Tesco Clubcard points before the payout option is withdrawn, amid wide-ranging changes to the supermarket's loyalty scheme.

Shoppers using cashback site Quidco to max their gains when buying online can now earn rewards on top of cashback, but you have to actively opt in to get them.

Shoppers using cashback sites to max their gains when buying online should beware that some retailers offer different cashback rates to different customers on the very same deal.

Cashback giant Quidco has revamped its charges, placing some customers into a free service and others into a £5-a-year "premium" version.

More than four in ten cashback site users have not received payment after shopping online, a study claims.

Cashback website users may have lost money as a major affiliate network, Deal Group Media UK Ltd (DGM), has gone into administration.