Keysend is an option in lnd.conf I recommend to enable it if you like free sats.
There is a nice UI in Thunderhub for sending keysend messages.
There's also this tool which sends a keysend to every node that can receive it. https://github.com/w3irdrobot/Satogram
OK, so it looks like I already have it enabled. Thanks for the heads up on this.
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As it turns out, I do in fact like free sats. On it!
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