1) Would be a risky scam considering the amounts of tips they have given. But they're original post has gotten >1m sats (though one user has donated >750k sats).
Yeah, but unique users doesn't count as unique people. I could create 500 accounts and send myself my own money and spoof user engagement.
Btw, this is an unsolved issue with the BCH mempool. Memo uses a custom node which does not handle double spends. I wrote about this before - https://jasonc.me/blog/bitcoin-bip-133-double-spends-bch
I think the blame for this lands on the people accepting the low-fee transactions. They're the ones breaking expected behavior.
all BCH wallets need to implement the memo-protocol; wallets should start by implementing memo-profiles as `contacts`; this would make public people searchable & tip-able from any wallet
That already exists. Lots of wallets already have an address book.