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How does that work I guess it's sort of arbitrage.

BeeSwap puts up the money to try and incentivise people to balance the pools so they can keep making higher fees on futher swaps. Smart.

The fee for swapping the other way also rise when the liquidity is below 8k.
0.3% bonus when liquidity is 4k-8k and 0.4% when it's below 4k

Been like that for some time now. The swap.hive liquidity hasn't been over 5k for several weeks now 😆

I bet they do! 😀