Just to give you a bit of background to this... we've been contacted frequently by Samaritan's Purse over the course of the last 12 months asking for us to delete posts on Mumsnet.
Since July we've had around 20 emails from them asking us to delete various individual posts and all the threads relating to their organisation on MN prior to Brian's appearance on Mumsnet last year. We didn't comply to those requests.
Then yesterday, SP reported a number of those posts as being defamatory . At that point - under section 5 the new defamation act - we as an online publisher are required to contact posters and to give them the option to delete the complained about posts or to stand by them, in which case the poster has to provide their contact details, so they are contactable in the event of any possible legal action.
It's actually, we think, quite a sensible solution to the problem of online libel - if you're happy to stand by your words - and bear in mind there are a number of defences in libel, most obviously that your words are accurate/true (here's further explanation: www.legislation.gov.uk/ukpga/2013/26/crossheading/defences/enacted) then you can.
If you're concerned that a post may not be entirely accurate or just don't feel inclined to pass on your contact details to us, then we can remove the post, in which case that would very likely be an end to the matter.
Previously most websites pretty much just removed stuff when they received a defamation complaint - because there was too much risk of becoming embroiled in a myriad of legal actions and they may not know the truth of the matter - now at least the procedure gives users the chance to stand by their words. In that sense this new system is much more amenable to freedom of speech than the previous one.
But of course it does mean we have to send these rather daunting legalesey emails which can seem to be a bit big brother. What's important to remember is that providing contact details to us or any online publisher, doesn't necessarily mean anyone's taking anyone to court. It's just the hoop which websites are obliged by the defamation law to go through, and which allows us not to knee-jerk delete your words whenever someone's shouting libel.