QoinPro provided different types of off-chain rewards that people could collect, consolidate and transfer. The following list is not exhaustive, but gives a good indication.
Airdrops & Airdrips
Community Engagement Bonuses
Why were Faucet transactions off-chain?
QoinPro was used as a faucet to collect and store freebies off-chain until a threshold was reached that so that on-chain transaction would make sense considering the associated transaction fees of network miners.
What is the difference between an Airdrop and an Airdrip?
An Airdrop (aka. candy) is a reward for doing something. Usually a social media task (Follow on Twitter, Like on Facebook, Subscribe on YouTube, etc.). An Airdrip usually is a smaller (but recurring) reward for continued engagement such as being a member of a Telegram group, staying subscribed to a newsletter, etc.