The best technology removes problems from the equation all together. Profig (which is kind of a silly name despite its amazing core service) provides a virtual phone system that can be developed like web infrastructure.
Once their account creation is automated (which it sounds like that's their main to-do based on yabbadabbadoo's responses and product description), build-up and tear-down of virtual communication infastructure would be like going to pick up pens and pencils for your business (a trip that might take 20 minutes).
The faster and cheaper critical business infrastructure (e-mail, "productivity", research, communication) can be integrated into an organization the more market opportunities exist for smaller players, as new or temporary opportunities could be capitalized on with much less foresight or risk.
YC companies like this that use other YC companies as initial users sounds like something Xhibit would do, but what PG is essentially doing is actively researching into building virtual companies at increasingly marginal rates, directly on the market itself with real companies.
I will be watching this one more closely for sure!