Yes, the MagicJack Plus plugs directly into your router to make calls. You only need a Windows computer once when you set it up the first time.
He was being sarcastic.
I didn't see any emoticons or other indications of sarcasm. Also a lot of people are still only familiar with the original MJ which DID require a computer. The MJ+ has only been around for two years now.
As for the other fellow who inquired as to renewal costs for a Canadian number, with MJ currently it's $10 extra every year to renew a Canadian number. Otherwise it goes back into the pool and you get a random American number for free. Total renewal for a year of MJ+ service is about $40 per year now. Still cheap even compared to the alternatives I listed previously.
Since we're Canadians we're used to getting reamed on products and services Americans get for peanuts