If you were to log in, you'd be able to get more information on your fellow community member.
I would point out, as I did when Philip blogged about this topic, that the problems he experienced were principally related to difficulties moving his old phone number to VoIP. Number portability has been the law for years, but too often it still doesn't work right. On the other hand, if you don't need to keep your old phone number (or you're like me and _getting rid of_ your old phone number is among the primary reasons for wanting to switch to a non-ILEC carrier), there's no particular reason for you to care how difficult it is to move it. I've had uniformly good experiences with Vonage since I signed up with them in 2002, bidding my old used-to-belong-to-a-fax-machine-and-SBC-wouldn't-let-me-change-it phone number a disgusted "good riddance!" and gaining in the process not merely some monthly savings but a handful of services not available from ILECs at any price. IME, unless something goes wrong with your internet connection, it Just Works(tm).