The Skype-eBay marriage is dominating the VOIP spotlight today but what of Vonage, which was the industry's poster child before its buzz suddenly evaporated? What does the Skype deal mean for Vonage's IPO, which is supposed to raise $600-million. Is it good for Vonage by raising the valuation benchmark or does it hurt the company by showing there are better prospects by investing in a P2P VOIP play that has little infrastructure? Om Malik notes the biggest threat facing Vonage is the growing presence of cablecos, the Bells, upstarts and the "increasingly unfriendly FCC". A highlight of eBay's conference call earlier today was CEO Meg Whitman dissing Vonage by saying that in terms of users "Skype is adding a Vonage week" - meaning it attracts one million new registered users every seven days. It would off base, however, to suggest Vonage's IPO will fail because there are enough investors who believe in Vonage and/or VOIP's growth. The question is how much stock Vonage will have to give away to get an IPO done. One more thought about the Skype-eBay deal is you'll hear a lot more about pay-per-call joining pay-per-click (AdSense, etc.) as the next killer e-commerce app based on the idea that buyers or advertisers will pay a fee if people connect to them using VOIP.