... and they can be tailored to the changing needs of a family.
Amy - I would urge you to read the discussions (it may need a few hours to go through them here on this thread, and in the Site Stuff thread 'recent decision by MNHQ')
MNHQ put a web page online (the day Ed Vaizey had a webchat) which indicated support of the outline for ISP-based blocking, and was invited to the first 'round table' discussion with other organisations and ISPs about the proposed blocking of porn at ISP level, just a week later.
Having seen the Campaigns page, with this policy getting support from MNHQ, I looked at the lengthy thread [the one we are on] where arguments against that proposal went into some significant detail as to why it is not the best way (and no, that does not mean, as some have suggested, that anyone who is against the proposal is in favour of porn, but can see flaws in the proposal).
I started the thread in Site Stuff, to alert others, particularly those who may be aware of the idea being floated back in November/December but who may not know the shortcomings of the proposed method.
After a few days of discussion, some of the points were picked up by Justine, but even then, things were quite hazy as to what should or should not be considered as 'forbidden fruit' - I quote "Maybe the bar should be set at very hardcore porn."
Filtering can be got around, and the teens (and younger) today can mostly run rings around their parents. If what they do is being logged that's one way to determine if they are attempting to avoid filters etc.
But it surely comes back to having a frank discussion about how some of the material online is not intended for youngsters to view, and there would still be a high degree of disgust if they found their adult children were interested in porn, violence, etc.
If it is blocked, then some whizz kid will find a way, someone else may have an unencrypted wireless router that allows teenagers access via their smart phones, or laptops or whatever.
It's simplistic to assume that blocking porn at every ISP will happen, as there will always be methods to avoid the filtering.
However, far more important is that by laying down infrastructure at the ISP (which could be very costly and the bill will not be paid by the government but customers), there is then an easy way to block other sites, such as Wikileaks, or a human rights site that campaigns against some future UK governments 'iron grip' (1984-style) over the populace.
Yes, it could be classed as the realm of sci-fi, but we already have the Regulation of Investigatory Powers Act, which can force ISPs to divert a stream of internet traffic to government monitoring services under the 'possible terrorist' umbrella. The ISP is not allowed to divulge whether such 'black boxes' are even active, nor who is being monitored, but in theory, all traffic for a household could already be under scrutiny, and anyone telling the members of that household would themselves be liable to arrest and detention.
One ISP moved their mail servers overseas and encouraged users to ask at intervals whether there were any black boxes active. If there was an answer in the negative, we could rest easy. If there was no answer at all, then we had to reach the obvious conclusion, that the boxes were active and the ISP gagged from acknowledging it. So we're not in a society free to do what we want, and ISP-based filtering would be a massive drop in keeping what liberties we still have from being abused at some future time on a government 'whim'. They could no doubt enact legislation which would remove the 'opt out' and increase the scope of sites which could be included, and then where would we be... oh yes, in a similar position to a massive Far Eastern country which had tanks go through a main square in the capital and now has whitewashed it from its history as if it never happened.