Can I run ads on the site that uses the API?

I realize that the first point under the terms of use says:

You can make some great things with our API, but unfortunately money isn't one of them. The API is strictly for non-commercial use only. Commercial use will result in your API key being revoked.

But I would like to know if I can run a few ads on the website I'm planning on making, just to keep it running? Since it's just about making a few bucks that only goes to keeping the site up, I don't consider it commercial use, but perhaps I'm wrong?

@jegharenhat: pretty sure you answered your own question. You can't make money off it, no matter what its being used for.