I don't think anybody is going to say "AHA!! You're not a REAL unschooler! Off with her keyboard!!!"
It's more of a philosophy- are you worried about your DC keeping up with their public-schooled peers or do you just want to see them blossom on their own, with as little interference from well-meaning adults as possible? Anybody can join in on this thread as long as they're respectful towards the unschooling ideal. If you carefully read the responses so far, at least half of us have stated that we're not 100% unschoolers, but we lean that way, and we feel kind of out-of-place on a board filled with curriculum questions.
The last thing I want is a label. Sometimes the board is full of unschooling threads as well. I think people should just start threads on their interests, concerns, joys. Start a thread about what's going on. In 5 seconds the first page of this forum could be filled with unschooling thoughts.
And who is to say there aren't ideas in the manipulatives thread that some unschoolers might find interesting. (I mean, maybe there isn't, or for sure there isn't. But we can't really say that that for sure no unschoolers would find anything of any interst...for sure. )
I also wonder what is the difference between utilizing online resources and utilizing some brick and mortar resources? I mean, there are zillions of curriculm ideas on line. Is using the interenet better than using a book, say? It's all print.
I don't think there are that many clear distinctions. I don't find these deep polarizations all that helpful as a hser.