Someone above said the farms are where you can call a spade a spade, but I think it's more of a place where you can call a spade an expletive retarded
expletive stinking, rusty shovel or worse.
They have many ghastly posters and some hilarious ones, and many informative ones. There are a gazillion threads, which vary greatly in tone and content. For the curious Mumsnetters who haven't visited it before, and want to see one of the darker aspects, I recommend searching for some threads about feminism. For example, many of the regular posters take it as a given that feminism is causing the degradation/breakdown of society, that white women should be servicing white men and having more white babies while all other women are having too many babies.
I think the one thing that radical feminist and the majority of the farmers have in common is the desire to keep pedophiles or would-be medicalizers away from kids. But they'll also use "pedo" as a random insult.
While a TWAW type of feminist may well call for the suppression of free speech,
I don't think I've heard any feminist I respect do so. Because free speech, duh.
Anna Slatz has/had an account there, and took flak for it.
There are also very informative posters there, and as mentioned above, receipts are demanded, preferably archived. These demands may well be accompanied with super impolite insults.
They have flabbergastingly huge amounts of meticulously well documented and sourced information about nefarious TRAs, a fair amount of which has come to these boards from there.
Also, for various current events, there are threads in which you can find (among the slapfights and BS) sourced information which is much more in depth and ahead of the news curve than in mainstream media.