It is nice to see yourself/PC Advisor pursuing such an interaction with 1&1 and I hope something useful comes out of it.
If the information bounced around in this forum over the last few days is anything to go by though, I'd say that 1&1 have their work cut out.
I doubt that anything they can do will reassure certain members of this forum that their sites will be in any way safe with 1&1 over the long term. If they (1&1) manage to improve their future handling of customer complaints though, at least something positive will have come out of so many negatives.
I'll be keen to keep tabs on this and observe its direction and developments.