Hmm yeah it could mean that, didn't think of it that way, I just assume you don't pay anything until 21/12/2008 then you'd pay the connection charge.
Curious also, o2 is say 7.50 per month, but how much do you pay for the BT line also? I keep think it's 7.50 only, but I guess there's also the phone line charges. What's the total amount you pay? if you don't mind me asking that is.
The connection charge is free now. If you sign up after that date then you need to pay a connection charge. Signing up now will incur no cost.
Im not sure on the exact cost, but you do need a line rental each month.