Re: O2's email is sidestepping all the important questions...
Well, I think I found the answer to the traffic-shaping question: http://www.sky.com/shop/terms-conditions/broadband/network-management-policy/
Looks like Sky Broadband Connect, whatever it may be, is shaped, but Sky Broadband Lite and Unlimited are not.
Still, I'd love to know what my opt-out rights are and what will happen to my calls to Europe. I can see absolutely nothing in their standard BB & Home Phone T&Cs about what happens if a new owner took over regarding the validity of the contract or data sharing.
In hindsight, this also explains why O2 got rid of the £5 a month off offer they had for O2 customers, so now there is no ongoing advantage for mobile customers (besides the 12 months half price offer that we were suckered in with. I actually had O2 BB for 2 years, then moved into new place with GF and took out a new contract in HER name to get the offer. So it's her, the poor thing, who is going to feel the cold hand of Murdoch on her shoulder... I feel like I set her up!)