Vonage

[private joker]

I was reading this thread where people talk about land lines and whatever, and there were a couple mentions of Vonage, but no real discussion about it.

Putting aside the already-hashed-out debate about land line vs. cell phone (I have a cell but I also use a land line, moving on, etc.), let's consider switching from my normal home land line service (which is AT&T/SBC) to Vonage.

What's the deal with them? I guess it's some sort of voice-ID thing and not as clear as regular calls? I think it's $25 a month for unlimited local & long distance, and my current bill is $39. Is it worth switching to save the extra $14 a month? Any opinions of Vonage one way or the other?