When Dave Fisher, Gary Steiger, et al started their websites -- in the antideluvian days, I believe -- loyalty marketing programs provided ff miles without flying rather generously. Guess what? The opportunities have now trickled to a few points or miles here and there. The only ways to gather meaningful ff miles without flying is in the very competetive credit card area. If there are people who want to alert others to these opportunities while gathering a few miles or points for themselves, I see no harm in that. Maintaining their websites is rather labor-intensive. Besides, their referral points or miles have probably maxed out.