You are charging too high interest rates. Even if they are micro loans, I see no reason to charge that high interest.
Loan amount : 0.02BTC
Interest & period : 2days. Interest 10%
Collateral : No collateral. Will pay back with my signature payment on Sunday(will receive more than 0.04btc from there).
Earlier also I have loaned a 0.01BTC and repaid it on time with more interest than I promised to segvec.