Excellent post. I wish I had known about the tracking stuff before I registered at WW. Granted, I only lurked (made a couple replies on completely non-religious topics), but I may have made the error of visiting a "bad" site before or after going to that site.
... No, not porn. This board, probably at some point. I usually had them in separate browsers, but not always, now that I think about it.
Anyway, thanks for the words of wisdom. And I agree - starting controversial topics will reinforce their fear of outsiders.
Take care,
SLM