Progressive Labor Party, if I remember right, was one of the first splitoffs from the Communist Party USA after Khrushchev's 'Secret Speech'. They were 'anti-revisionist', which then meant they disagreed with de-Stalinisation. Other than that, the main thing I know about them is that they were active in the 1960s SDS, and made their members dress 'square' as opposed to 'hippie'. They are a Marxist-Leninist party, heavily influenced by Maoism. There isn't much libertarian about them. I don't know about their internal structure, but I doubt it has anything in common with any anarchist groups.
Kasama is a project from ex-RCPers. The RCP is a Maoist cult, in my opinion. Kasama can be interesting sometimes, and I've checked their site occasionally. I know that a couple posters here used to be active in the comment section on that site, not sure if they still are. That said, they are not anarchists and are extremely critical of anarchism. They have very different politics. But, in general, some of the main people seem like nice enough folks. I think a lot of hatred of Maoism is not always based on actual politics, but by the cultlike quality of their adherents, so when sane adherents come along, some of us are caught offguard and ascribe beliefs to them that they don't hold. Make no mistake, the overall views of the Kasama Project have little in common with anarchism.




Can comment on articles and discussions
Yeah I spoke to a few of them via email a year or so a go and I got the impression the website was run by a group of Maoists most of which knew each other from the old RCP. I remember hearing about them having reading groups and supporters who funded them but nothing about an actual physical structure.
I know I've seen most of the Kasama admins support and defend the idea of Democratic Centralism, so I don't really see where Iexist is getting
As far as I knew they said they were open to having non Maoists take part in the website as part of an on going debate. So in essence they're allowed to comment.
Oh and as for Anarchistic but not Anarchist? I think even Kasama itself would disagree with iexist.
http://kasamaproject.org/pamphlets2/4331-the-historical-failure-of-anarchism-implications-for-the-future-of-the-revolutionary-project