Two points to this post: the first more of an exclamation of surprised horror, the second a request for info.
1) I am a young professional living in a shared house; a common part of modern life. I have just learned that Sky Broadband Boost comes with a parental control feature that sounds great for a traditional family household, but horrific for a shared household. Whoever it is in my house that pays the internet bill effectively gets access to everyone elses browsing histories. We have no way of stopping this or knowing whether or not it is happening. I am astonished that this is not considered a serious privacy issue. My house "mates" having access to my data is just as bad, if not worse, then my neighbour or someone else in my city. All Sky (or other service providers) would need is to create a 'shared household' account that explicitly excluded invasive parental controls.
2) How good of a defence against the above is a VPN? I'd have thought that would solve it, but something I read on a website made it sound like Broadband Buddy could shut down VPNs. Crikey! How much do people here know about Broadband buddy?