Yes, I just worked it out too - it must be the current labs that they are advertising, but for new customers it could seem very confusing if they have to work out how many minutes they'd get for £x.
Well I think that's the point of the advert, they've worked it out for you.
I refreshed it for ages - ended up reading some articles - but the ad never appeared.
well i just saw it whilst surfing the net.
Managed to find the link in source code.