Yes. Ripple[1] has allowed for the use of bitcoins to denominate loan-like credit extended between people for quite some time[2]. You just have to be careful.
By the way I back my ripple credit entirely with bitcoin -- if you can make a payment go through the network to me, you are entitled to it.
By the way I back my ripple credit entirely with bitcoin -- if you can make a payment go through the network to me, you are entitled to it.
[1] http://www.ripple.com
[2] http://ripplepay.com