[vdnkh]

This comparison has never made sense to me. If I get a free beer, I can do whatever I want with it. Drink it, dump it, whatever. Same thing with pretzels. Am I missing something?

[dgrin91]

To get free _airplane_ pretzels you need to first be on an airplane, which means you need to buy an airplane ticket, which costs hundreds.

Similar with free beer. You need to do _something_ to get the free beer. It will probably cost less than the airline ticket, but it will still cost.

[AndrewOMartin]

Yes