IMO this is really what this developer payment scheme is all about (based on the discussions with Caldwell, et al on app.net). As a twitter clone it is sufficie

IMO this is really what this developer payment scheme is all about (based on the discussions with Caldwell, et al on app.net). As a twitter clone it is sufficient (minus the network effect), but it is really a messaging and identity platform waiting to be defined by the applications written on top of it. Caldwell alludes to this near the end of the OP.