The best miles are free miles as far as I am concerned. But are they really free? If it takes you an hour to earn 50 miles it is probably not time well spent. But when I can get free miles without any major time commitment, then I’m all over it! Hawaiian offers an opportunity for free miles that doesn’t take any extra time away from you.
Hawaiian Airlines is the only remaining airline that I know of that still offers an internet search toolbar that allows you to earn miles for using it. You can download the toolbar and then use it to perform all of your searches. You will earn miles at a ratio of 1 mile for every 3 searches performed up to 1,000 miles per month. Right now Hawaiian Airlines is offering a bonus of 500 additional miles if you perform 500 searches during the month of April.
You already search the internet, so why not get miles just for doing what you already do!