hey cmrade. yes it is reliable for the most part. the only thing is, the site is run by trotskyists, so their list of recommended readings etc is not worth bothering with (it of course includes the disputed 'last testament' of lenin). they dont edit the text itself though, so yes in general its a very useful resource
Hello Comrade , Is this a reliable source for Leninist literature ? http://www.marxists.org/archive/lenin/works/index.htm