This could happen on any website though I don't see why anyone is ever shocked that when you post online on a public forum that what you write is in the public domain - if you want your private life private don't post about it online
Simple solution is not to go on the Daily Fail's site. Just ignore them. The thought that they might share a thread that I've posted on won't stop me using MN like I've been doing for the last few years because I couldn't care less if they do. What about this is upsetting posters?
But that's the joy of being anonymous on here. Yes they may share the details but unless it is very specific then people won't know it's you, so it's really no different to all the MNers seeing your posts.
I do think its lazy shit journalism to trawl websites like this for fodder, but that's 'news' these days isn't it.