In mysansar's defense, they do publish some articles that seem to be against Maoist too. But Salokya has his own right to filter out anything that he does not want to publish in his own site since he owns it.

I have not personally seen much filtering or blocking in sajha as far as political views go,  but if  you get into a personal vendetta with the administration they might block your comments too.

That's just how things work. We want things to be ideal but they are not so we need to get practical about it.