Make no mistake, USD5000 is no 'small prize pot'. I hope this tempts developers into the fold. A complete list of requirements in a nice specification would help a potential developer, hell for that money I'd do it if I could justify the time! Without a more precise spec its hard to guesstimate how long and thus how worthwhile the bounty is so you really need a comprehensive list of "must have's".

I'm interested as I'm sure many others are.