No monthly ripoff $25 like Vonage.

Hardly a "ripoff" compared to the Verizon service I replaced.
(And I use the $15/mo version anyway, for each of two lines).
Kept my phone numbers I had for 15 years.
Vonage has provided a nice, cheap service.
I pay a fraction of what Verizon charged.

Skype is nice, but it's not all the way there yet.
When they can do number transport, too, I'll consider switching.
For now I only Skype when on my laptop wifi'ing and
don't have any more free cellular time.