What is the best frequent flyer program out there?

What is the best frequent-flyer mile program for someone who travels from the US to Japan at least once per year, and makes several trips within the US per year? I am likely going to be flying to Japan every summer, and I will also be flying to locations...

It's about a 1,000 mile flight each way. I will be flying once a month and stay in Irvine for a week. A round trip ticket costs around $200. Please recommend an airline that has the best frequent flyer program for me. I need to buy tickets soon! As I...

Are there any report on increase in flying, purchase or other activities after the introduction of a frequent flyer program? How long does this effect usually last?

I will be flying to Abu Dhabi with Turkish Airlines, via Istanbul. I will then be based in Abu Dhabi for the next two years, and I anticipate making several flights to a variety of long-haul destinations, and probably a few within the middle east region...

I would prefer a Star Alliance member airline. A quick sample of the cities I frequent: Brussels, Paris, Chicago, Copenhagen (maybe more than others), Gothenburg, Helenski, London, Newark, Oslo, and Stockholm. I'd also prefer not to fly United, US Airways...

I would prefer a Star Alliance member airline. A quick sample of the cities I frequent: Brussles, Paris, Chicago, Copenhagen (maybe more than others), Gothenburg, Helenski, London, Newark, Oslo, and Stockholm. I'd also prefer not to fly United, US Airways...

i am looking for a program which gives a free round trip in US after you accumulate points. which is the better one when you think in these terms? my friend says "united" is pretty good. they give one when u have 25000 points.