The next market segment to reward frequent travelers will be cruises. Not certain which companies reward repeat visitors at this time. Good idea however not to break it down by individual companies but we should have one area to post.

Also, thanks for the tips on cruise boards elsewhere which had too much information.
They were too big and not as well organized as FT. It took me some 20 minutes scanning for something on Holland America's Zaandam only to get Alaska cruises.

Lastly, if it wasn't for this thread here on FT about this subject, I would have possibly never learned about cruiseawards.com I am running out of avenues to accrue more AA miles and a cruise could be one of the 20 partners promotion.