In answer to my headline question, I'll speak for myself and answer yes, at least for my time as one of their customers.
In news today, there are headlines like this one (linked): Vonage's Prospects Dim from Business Week (and similar news is out on C-Net's www.news.com site).
Vonage had been a booming telco like company, selling an innovative product at a highly competitive price, Voice over IP service that gave customers telephone service that worked over the internet. It was inexpensive and yet very feature rich with the standard suite of add-on features thrown in for free (call-waiting, caller id, 3 way calling, voice messages, etc.)
Unfortunately Vonage has been found guilty of stepping on some very broad patents that had been awarded to Verizon some time back. I still question the validity of those patents as, in reading about the situation, it seems that Verizon may have pulled some pretty sneaky tricks in trying to get the output of industry working groups declared their own intellectual property. Verizon's patents also seem, to me, to be suffering from the whole 'obviousness' factor that would normally have a patent declared invalid and unenforceable, but that didn't stop Verizon's lawyers from pursuing the case again Vonage, and it didn't stop a jury from deciding that Vonage did infringe upon 3 of Verizon's patents.
Vonage has also infringed upon some patents that belong to Sprint, and the double whammy from both of these cases, with the Sprint case just having been decided, and the Verizon case just being lost on the appeal, seems to be more than Vonage may be able to survive.
I'm sad at this news as it looks as if Vonage will likely not survive, or not survive long term. I've stated elsewhere that I think it would make perfect sense for Vonage to merge with Sprint. I said that before the Sprint case was decided, for many of the same reasons pointed out in the originally linked article above. If Sprint were to buy (probably at a heavy discount) Vonage they could use their own technology to avoid the infringement upon Verizon's patents and in doing so would offer up a heck of a competitor -- with a well known brand name -- to the cable companies and AT&T and Verizon. Sprint could then package (bundle) both wireless services (cell phones) and a land-line type service (VOIP) so that their customers could get a great pricing deal on all of their phone service needs.
I hope that Sprint and Vonage do wind up coming together, and that Vonage is able to stick around for the long haul, but given the current state of their rapidly shrinking market (as many customers jump into bundled offerings from cable companies) I'm not sure that will ever happen.
I'll add a few more words in the comments area if you are interested in continuing this read.