Plus of course the ideal is to "do this right", in such a way that the only risk lies in whether the tokens you play with in the Open Transactions server will turn out to actually be convertible into "real assets" such as actual bitcoins, actual devcoins, actual groupcoins, actual litecoins, actual namecoins, actual iocoins, actual ixcoins etc.
That risk exists regardless of why one bothers to use such tokens instead of using assets directly, but properly speaking the counterparty of that risk is not the server but, rather, the issuer of each type of token.
It just happens to be the case on my server that I have not yet allowed anyone else to issue assets on my server, due to not wanting to be seen as an enabler of issuers of fraudulent/scam assets, issuers plannign to fly by night with the actual assets etc etc.
So if anyone has tokens on the server they already have the risk. The question then is would they like to loan out tokens to earn interest?
-MarkM-
You have a point.