For knowing what is a valid collateral -
Take a look at the first two posts of this thread
[EDU] The Rule of "No Collateral, No Loan" - IGNORE AT YOUR OWN RISK!I had some amount with me which I thought could be used to earn some extra cash.
Altcoins which are well traded and noteworthy are accepted as collateral.
Lending came to my mind and I thought of giving it a shot. I went through some posts and found out that bitcointalk accounts should not be accepted as collaterals.
They dont, correct.