Anyway, when the PR people are not running events, they have to do something, right?
Sometimes things are made that are instant/viral hits, but most of the time you have to work hard to tell people about it (and hence get users).
Imagine how much could've been done if those six had been replaced with programmers and/or designers!
It's like how implementation trumps ideas. You can have great ideas, but with no implementation, nothing happens. Ditto for building a good product. You can build the world's best product, but if no-one knows about it, it's not getting used.
Just look at Qtrax. They had pretty good PR, but no product to sell. So they blew their big launch and then blew their relaunch as well later on because their product didn't perform as well as PR said it would.