bank of time

We are looking to create an Intranet site for a group of people who exchange their services in a range of fields by hours - not € or $.
More info is here .... Time Banking on Wikipedia.

For this we are intending to create a site with profiles for each member including the member's account, forums, groups, a section for Classified = what the members are offering and need, FAQ, etc. and very importantly the accounting of hours - providing on-line exchange.