As collateral i have my minecraft account (worth $26.95 at the moment) and i also have a steam acount worth $555; i will provide the passpharses for both accounts and once you confirm them i hope we can make a transaction. Though i'm offering them as collateral i hope you keep the account details private, and also i would ask you to return my minecraft account when i return the payment. I hope this process could also remove the negative trust on my profile.
We can't risk our bitcoin for a collateral which can be reversed
You should know well what things are considered as valid collateral :
https://bitcointalk.org/index.php?topic=577765.msg6311902#msg6311902If you have one valid, then come back and I will be happy to provide you
And even if you provide me an reversible collateral worth $500 for a $50 loan, you should always expect a No from my side