astroturfing the deceptive practice of presenting an orchestrated marketing or public relations campaign in the guise of unsolicited comments from members of the public.
as I say, I'd never heard of this before, but I do get a bit suspicious of threads sometimes - and now I've heard about this a lot of things fall into place. Sometimes you'll get a thread started by someone and it's their very first post on mumsnet - they claim the issue doesn't relate to them too much personally but wondered what others thought (say it is attacking a person for example and they'll say, 'I'm surprised, I actually quite like so and so.. or have no real feelings about so and so.' Then two or three posts later along comes someone equally uninvested and neutral about the issue. whose never thought too much about it before until now either. A few posts later they have to hand stacks and stacks of information that it seems like it would take months to research. the original poster's disappeared by now - but pops up now and again, say if, the suddenly very well informed poster gets stuck or asked an awkward question.
Anyway, apologies. Straying away from the thread there - and there is definitely more important things going on. Geoff Aberdein's statement for example - very interesting indeed