Dogecoin consistantly has about 150% the amount of active addresses that Litecoin has, and between 10 and 15% those of Bitcoin; which is good considering it has only 0.3% of its market cap.
1. Tipping
2. Faucets
Tipping is mostly done off-blockchain, and faucets are just as common for the two other coins.
Correct me if I'm wrong, but is not ALL transactions are in the blockchain? How the tipping bots can be off-chain?