kgeiger writes "The FCC is changing the call termination tariffs that subsidized rural wireline service and coincidentally free conference calls. Free conference call services had located their dial-in centers in rural areas to scoop up FCC tariffs from its Universal Service Fund. USF monies will go to broadband deployment instead. Be prepared to put more nickels in the box."
On the other hand, maybe ad-driven Internet services (whether free or "freemium") will step in to the free-conference gap with some good-enough options, as they have for many other services, like email and faxing.