dunno about the stock but my friend told me their phone service was horrible. 99% of my friends no longer have a landline, non-cell phone service is a dying business. Long term this company is doomed. They do have funny commercials though.
I would never trade or invest in Vonage, but I do use their basic service for an extra phone number and voice mail. Never had a complain with the product. I thnk their long term their survival does not look good because of the changing use of communcations not their quality.
The service has worked just fine for 2 years. The big reason we keep them is because my wife can call her family in Europe anytime for as long as she wants and it is included in the monthly charge.