i found this on rewards canada

http://blog.rewardscanada.ca/2015/01...executive.html

if you install the Airmiles browser extension, you get 50 airmiles. i have a few browsers and installed this on one that i don't use and when i do, i clear browsing history, cookies, etc. i'll uninstall it as soon as the miles post. i wouldn't install it on the browser i use for everything though as it undoubtedly tracks your every move.