Every time I read a post like this I think “that person doesn’t mind having his time wasted.”
There is a cost in lost opportunity. I for one actually transact business as a result of Twitter participation, and when it is down, it IS a lost opportunity cost and money lost.
Plenty of companies are being built of upon the assumption that Twitter is available – TwitterPhone and about 200+ API developers for example. I guess that they have nothing to bitch about, either.
Also, I would like to point out that Twitter is no where NEAR 9 nines of availability.
It is not the audience’s fault if Twitter cannot figure out a revenue model. I don’t blame my customers if I cannot sustain enough business to keep my idle hands fully occupied – that’s why they call it “work.”
Twitter will one day make money on the community being built. Ergo, there is value to participation and this whole notion of “it’s free – shut up” will be exposed for the BS it is.