It's being advertised in today's Guardian (bottom of page 2). Of course it doesn't mention that there's no improvement with compressed files or that picture quality falls off markedly at higher speeds.
And as an amusing aside, whereas their web site boldly claims a x5 speed improvement, the Guardian advert only admits to a much more coy "up to 5 times", Ah, the power of the Advertising Standards Authority and the Press Complaints Commission.
