One of my favourite communication bloggers, Noah from Naked in New York has developed the sort of simple Web 2.0 interface that has way more validity than a lot of expensive research. Its called Brand Tags and allows tag clouds to coallesce from text inputs by people such as ourselves. Go and have a play and while you're at it remember that if a brand is a collective hallucination then this particular emerging brand has an awful lot of 'collective' going for it.
I just remembered that Noah probably wrote what he needed to create this interface himself with the self taught PHP/MySQL explained in this post over here. He's very clever like that.