The undisputed king of atomic swaps is jl777 (he did them in 2014) his BarterDEX has done well over 20K swaps now, most using spv tech so you don't even have to download any blockchains, and if users are prepared to time-lock a KMD deposit they can be 0-conf too. BarterDEX has already done test 'etomic' swaps between KMD and ETH even.
It's absolute BS that Charlie Lee claims any credit for doing a few manual swaps with LTC, eventually the word will get out about BarterDEX, and people will naturally ask "why did Charlie ignore BarterDEX for so long?"
Holders of assets like DEX have already been paid 2mil USD from fees so far, just from the test alpha stage.
That would be ~$100 in fees per swap. What am I missing?
You probably need to look into the Komodo eco-system yourself to understand it fully (it's quite expansive, so complicated), and I don't want to derail this thread, plus I only know the basics myself.
BUT, in a nutshell there are three fees being collected (notary fees, BarterDEX fees, Jumblr fees), so far the largest is notary fees for 'delayed proof of work' (dPoW), which notarizes the KMD blockchain onto the BTC chain with periodic bitcoin transactions, which therefore, gives any assetchains created on komodo platform bitcoin level security themselves by extension (btc->KMD->assetchain).
The 2 mil USD paid last month was from notary fees collected since KMD started 12 months ago.
That's what the majority of bitcoins raised in the SuperNET ICO a few years back is being used for (i.e. paying notarising fees which are btc transactions). My understanding is when a Komodo notary makes a notary tx to bitcoin they also pay a fee in KMD that is accumulated and paid to various supernet asset holders, and in Dec 2017 those 'notary fees' amounted to 2 mil USD. There are 64 KMD notaries who were elected by KMD holders, elections every year.
The BarterDEX fees are accumulating, but still small, and jl777 says he will distribute when fees total 1mil USD from now on.
Then there are fees also for Jumbling service, which adds privacy to funds coming out of BarterDEX afaik
Honestly, you need to research SuperNET/BarterDEX/KMD yourself, it's complicated so takes time to get your head around it, but I'm convinced jl777 has a great product with BarterDEX and KMD. The vision is simple - allow risk free trading of any crypto with 100% privacy, and eventually that'll include XMR.