There is only one such flyer/ traveller that I follow.
- He pays his own tickets and tells you how much and how he bought them.
- If he upgrades with points, he says how many.
- If he gets a freebie - he says so.
- Many times, he has travelled long haul in Y and compared with PE. Then C and F.
- He is broad in appreciation and criticism.
- He covers all modes of travel, planes, trains, coaches, ferries.
There are some who clearly take the airline freebies and are prima donnas.
This is not the place to send links, if you want to know who, then PM.