ithildin | Fic MO

I posted the first bit of the Halloween fic I'm doing last night over at

all_night_owl. It was kind of nice getting that sort of feedback early on in a story, and I realized I kind of miss it. When I first started writing fanfic, I'd write while I was on IRC, and paste parts into the channel for people to read and comment. Now days, I pretty much write my fic in solitary mode until a beta reader first sees it. Unless I make

ninjababe read it part way through, but she whines when I do that, so I don't do it with every story [g].

So my question for you writers: what's your writing MO? Do you write in a solitary environment? Do you share the story as you go with friends? A writing group? Something else? This is me being curious.