Right. You're the product. In this case, you are the marketing product. It's not always bad to be the product. Cows eat for free, right? Just a good thing to keep in mind.
Honestly the buzz I want to hear is "you guys suck, here's 10 ways you could be better" before we start taking money, at which point it's "you guys suck and you're taking our money, give me my money back". I'm trying to build the service I would use, and the intent as mhicks said up above is to always have a free tier so that folks get a chance to try it out before they commit.