When it came time a few years ago to buy a home VOIP service I went with Verizon's VoiceWing on the idea that Verizon was a more stable long-term service provider than Vonage. Today I got a letter from Verizon informing me that it was shutting down VoiceWing effective March 31st. So Vonage wins after-all (of course there is still Delta Three which Verizon resold as VoiceWing in the first place).