[Smirnoff]

That’s called negative profits or earnings before taxes/depreciation/etc.

By definition revenue can’t be negative.

[kelnos]

Sorry, my comment was tongue-in-cheek. If revenue is defined as income from operations, having to pay people to use your product could be considered negative income, aka negative revenue (even if that's not how that actually works). I guess it was a bad joke if I have to explain it.