How can I check the speed of my broadband connection?

A recent study by the comparison website broadband-expert.co.uk suggests that actual speeds are often only half the advertised rate. This has lead to the introduction this month of a voluntary code for ISPs by the regulator Ofcom. The new code will mean ISPs taking part will have to give customers an accurate measure of their broadband speed, and offer a lower-speed package if these estimates are incorrect. But how can you tell the speed of your connection? Read full article on Guardian Unlimited