I've read claims that the calling card business has declined in the last ten years, however, maybe it's because there aren't many competing so well regarding price and ease of use.... Plus, calling cards are only one piece to the PVSP puzzle... Imagine what kind of long distance market share they can pull once they have apps for all platforms along with the cards.
The best part? All pieces of the PVSP puzzle take advantage of one large component, working together seamlessly. Say it with me, "OUR MARGINS ROCK!". Lol
Party on PVSP