Apple Europe has introduced a new limited-promotion for Mac users called Sponsor a Friend.

The deal involves a knock-on 10 per cent discount. This means, for example, that a customer buying a 20GB iPod worth £399 can save £40 when purchasing anything else from the Apple Store.

Apple describes the offer is described as "a thank you for taking your friend's advice and visiting our site".

The offer is available only to qualifying Apple Store customers who have received an iCard detailing the offer from Apple. These cards are limited in availability. More information is available regarding the deal, which extends until April 30.