
What's the issue?
Let BT use Phorm, let Mozilla 'collect' data. Why should we care? This is nothing compared to what your bank, credit card company, supermarket, government, employer, etc, etc already know about you.
Whatever Ad's they target at you, I'm sure there'll be an Adblock or similar add-in produced to block such traffic.
If you want to be really scared - just consider that the UK government is suggesting that ALL (that's ALL) browsing history, email traffic, blogs, usenet visits, voip calls, etc etc will be recorded for their use for every user - and of course they'll treat it with the same confidentiality as they do our tax records!
These plans make Phorm, Mozilla and the like look complete amateurs!
Paris, 'cause she's free and easy with her data