I can't remember but I may have downgraded the OP (i cant see the post in order to see). I thought it was pretty unhelpful to talk about some lectures as if we all know what he or she is talking about, no introduction, no link. I've often downgraded posts after seeing posts already downgraded for no reason. It's mainly because I hate the system and think it's silly. If that's considered "trolling" in your book, you haven't been around the internet very long. It's funny that it's a huge issue "why are my posts being downgraded.. how am I being unhelpful??" as if being unhelpful has anything to do with it.. ever. 99% of the posts on this forum are technically unhelpful: people shooting the sh*t, talking about lectures they saw assuming we all watched them together, whining about downgraded, etc.. If I could downgrade my own posts I would, but I'm not allowed to.