Thanks for the advise Quickseller, i did have a blockchain wallet address linked to this account a long time ago, not sure if i posted it though, what's the easiest way for me to check this?
I do remember signing a message for marcotheminer for a small loan a long time ago so it must be there somewhere.
You can do a forum search for the address in question and if you posted it then it should show up.
If you had signed a message for a lender and the signed message is in your outbox then you can use that address to sign a new message. Although you should have posted that address for the signed message to mean anything