Are there actually avatar campaigns that only pay for avatar space? I'd love to be even more of a whore than I already am and rent out every pixel of advertising space I've got (that's a LOL).
Currently, there is no such campaigns. But in past (way beffore era of bounties), there was plenty of such campaigns. There is old overview of such campaigns -
https://bitcointalk.org/index.php?topic=1087042.0In past, in some campaigns were giving extra bonus for participants who wear avatar. Or some gave option to wear avatar only.
I was in several avatar campaigns. In one campaign I had to get paid both in BTC and new coin, but I the end I got BTC only.