The problem with your freemium model is that there's no real incentive to jump up once you're over 50MM impressions. At over 50MM impressions, you have your ow

The problem with your freemium model is that there's no real incentive to jump up once you're over 50MM impressions. At over 50MM impressions, you have your own in-house ad sales force (or you should) and they can open the kimono to media buyers. I think they're kind of screwed in that they have to charge everyone and I can see the logic that a min/max model would spit out $5,000 as the magic number. Plus, the only people who care about impressions are people selling on a CPM (or similar) basis. Someone like, say, Dropbox or 37signals or even Consumer Reports doesn't care. (Lastly, you've been around here long enough to know not to sign your comments/posts. If you're going to add extra stuff to the bottom, add some of that sweet, sweet LA sunshine.)