ETHLend will allocate 20% of collected fees to purchase LEND from these exchanges to reward active lenders and borrowers to increase user adoption and lending volumes starting Q1 2018.
50% is allocated to active borrowers based on volume and the other 50% is allocated to active lenders based on volume. Rewards can be claimed 30 days after the Q ends.
Yes, the promise to rebuy LEND using fees was outlined in the whitepaper, and this is a guarantee that the price will rise in time, since the bought back lend should be burned if I remember well.
I read on their telegram few months ago that they revise this decision? Based on an idea that burning didn't guarantee that the price will rises, so instead of burning they will just airdrop the bought-back token to most active people who utilize their platform.