I hope you can reveal more details of how you are going to accomplish what you've set out to do in the site.
In general, technically minded people who care about privacy like to see these kinds of solutions in open source form or there will be heavy resistance to trust it.
Yup, more information will be up soon and all of our code will eventually be open sourced. There are no secrets to what we're doing at all, it's just a question of putting it all together in digestible form (and in the meantime--or any time at all--my email is in my profile and I'd be happy to hear from you).
The really sticky parts of Parley (ie. crypto) are already open source, made and reviewed by far greater minds than ours. We're mostly trying to solve the network problem that has impeded adoption of end-to-end email/IM encryption in the past by building a system that is ridiculously simple for anyone to use.
In general, technically minded people who care about privacy like to see these kinds of solutions in open source form or there will be heavy resistance to trust it.