A friend who's interested in getting Internet telephony service stumbled across a pretty good story outlining what's available in Canada and the pros and cons of each service provider. The companies in the story include Vonage, Primus, Call-Net, TeleHop and Yak.
Here's the link: http://www.broadbandmarket.ca/news1027.html
On another note, I received a comment about an assertion I made that VOIP would gain little momentum in Canada because local prices are so low. This fellow rightly pointed out the monthly bill adds up if you have basic service for $22, voice mail for $8, call display for $7 and you make a lot of LD calls. For people who want multi-feature service and use a lot of LD, Internet telephony service can make sense. It will be interesting to see if these people actually jump ship.
If price is going to be a/the key factor in Internet telephony adoption, check out Comwave Telecom, which has two packages priced at $9.95 and $14.95 a month respectively. Not sure about the quality of the service but the price seems hard to beat.

Today marks the first anniversary of wireless number portability in the U.S. - an option used by about 8.5 million people to switch carriers. Of that total, 732,000 apparently gave up their home service to go completely wireless. Given there are about 170 million wireless users in the U.S., LNP has been far from the mayhem the carriers were worried about.
Here in Canada, LNP portability isn't even on the radar screen - an issue that will no doubt please ARPU-happy carriers. In informal chats with the CRTC, there is little call for among consumers. As a result, LNP is low on the priority list, if it exists as a priority at all.
LNP is another example of the philosophical differences taken by telecom regulators in the U.S. and Canada. Given this situation, it will very interesting to see how the CRTC comes down on Internet telephony in light of the FCC's decision to adopt a laissez-faire approach.