While I'm browsing for some results, it's interesting to note that the world's first decentralized exchange (DEX) to support the Lightning Network has recently been launched.
UXUY gets idiots to download their app and gives them unfunded(not secured) onscreen balance of upto X amout of msats.. which cannot be claimed unless you go through their central hub to close the channel and hope the hub honours the balance
funny how they want to call it a "free air drop"
reality is that the DID uxuy service is not even a DEX because there is a central hub that is controlling the msat balance and channel ID's without individuals actually getting real sat value under their own real settled key to lock/fund the channel
(a secure service would use the funding lock as channel id to prove msats are backed by the keys used within the channel)
many services pulled this trick which is why LN cannot be trusted