If it's to compete with those, then they need to rethink the "existing customer" link.
And I guess I'm probably right that it would be a new sim / new number - as I read it, I could just apply for a couple of free sims, and spend down the credit on the old ones - could go a few internet sessions, loading free apps from Playnow and tinkering with other stuff.
http://allyours.virginmedia.com/html...-go-offer.html
Sure that page used to have more on it, and said up to 4 sims (unless I saw that because I'd already logged in to check webmail).