Unfortunately, they'd probably harvest it anyway.
There's truth in that statement, but reach, hits, and how long people tend to spend reading/searching DF all play a part too. Of which, I can only image DF would rack up on.
I know I've personally spent an embarrassing number of hours scouring old DF topics over the last 6-7 months trying to better understand these fascinating worlds of partner dance, particularly ballroom; before finding the courage to join as a member and respond to threads.