O2/Symantec blocking MR sites

Article here. Excerpt:

'By now most people are aware of the issue of men's rights website being wrongly blocked by Symantec and various mobile phone companies due to them somehow being flagged as "hate sites". I've done further investigations and can exclusively reveal the official response from these companies on this matter. There tends to be a bit of confusion about this issue and so firstly I'll attempt to explain what's going on and tackle some misconceptions.

Which sites are blocked?
I initially identified 48 sites blocked by Symantec/O2 and flagged as "hate sites". The list then grew to 58 as even more were identified. It's fair to say that a majority of key sites critical of feminism and supportive of men's rights are blocked. You can see the full list here.
...
There are currently two ways to check whether or not a site has been branded as a "hate site". Users have previously checked a site's status by enabling Norton's DNS service, but a much easier method is O2's url checker.'

One of the blocked sites is indeed MANN.