How about only counting useful posts related specifically to miles and points?

No questions/complaints about airline customer service or upgrades or food, etc.

And I think that at least five other members must agree that the post is useful and on-topic. Then you should get credit.

To ensure we're on equal footing, all post counts should be reset to zero. FT members should be randomly assigned to five member teams and the entire FT archive will be split up among those teams to read, rate and credit posts.