How is it any different than promoting yourself with 1% or 2% pool fees?
The idea of the testnet is decentralization and learning how to operate pools. Of course, we want people to delegate to our pool in order to actually get some blocks to TEST and LEARN about how the system works, how to IMPROVE our pool etc… Since that is our goal right now, we set the fees to 0%. We need the community to help us TEST our pools because we don’t have enough ADA ourselves to get a block anytime soon, and in return, we are offering 0 fees.
As for promotion, we hardly promoted our pool at all so far - just registered, said hello, and asked a question.
We are trying to support the community by giving it fee-free rewards on staking because staking alone is a reward for us at this point - all we are trying to do is TEST, LEARN and IMPROVE.