Well I guess "screwed" wasn't the right term to use. Didn't think that it would start a huge argument by posting my opinion.
But personally in my OPINION they were a bit underhanded. Cathar does all the work, gathers all the information, and they just take it and use it.
I don't agree with what they did and will not buy from them. But that's my opinion. You don't have to agree with it. You may think they had every right to use his hard earned work.
And as for neomosses and the other guy, as far as I know, they don't manufacture blocks for a living and are therefore not selling them.