Same here. I was very active for three or four months, because I loved the idea, but after re-explaining what SQL injections are the fourth or fifth time in a week I decided the community had simply gone too designer and really needed a dose of Stack Overflow.
I loved the idea of a community to unite developers with designers, but there seems to be a different constant factor on exponential growth with developers than designers, presumably because we actually are, on average, a bit more introverted.
I feel a lot more slighted than is reasonable over the fact that they let you check developer or designer or both, so 90% of the designers checked both. I can't make a reasonable-sounding argument for why that irked me so much but it really did.