I did this once. I tried to post politely on what I thought were the most non-controversial threads, and using precise logic with cited evidence. No profanity. No personalizing. Exceedingly gracious and even-handed.
I lasted in that evil DU toilet for only a few days before they banned me.
Posting links to support your point of view and show that you did your homework is strictly a FReeper thing, and a dead giveaway.