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.