If you show the keychain status in the menu bar (you can change that in the keychain preferences) there is an option to "Lock Screen". You can also have a custom keyboard shortcut for this.

Yes, but look at the numbers : an Ontario students pays 16 000$ more then a Quebec student for a bachelor's degree. However, when they graduate, the Ontario student will, in average, pay 5000$ less taxes per year. So 3 years after graduation, the Ontario student will be in a better situation then the Quebec student.

I had the best luck with this method

But then you might be violating Canada’s Olympic Broadcast Media Consortium broadcast and digital rights with the International Olympic Committee that are limited to the Canadian territory only.

For the specific case of the olympics, IOC (International Olympic Committee) gave the BBC the right for the Olympics only in the UK (tv & internet). If you are in the USA, NBC paid the big bucks for the rights(tv & internet), so the IOC asks each broadcasters to limit internet streaming to their territory.