I have stopped posting in 'intelligent' debates on here for a reason - they aren't intelligent. It's the same few 'informed' characters knashing teeths over Wikipedia articles when they have next to no real life knowledge on the actual issue. I don't think there is anything wrong with forming your own conclusions, but being a google warrior doesn't make me or you informed. Climate change is always a classic, armchair experts unite!
Also, if you are really passionate about an issue, actually DO SOMETHING about it, because posting on here changes nothing for anyone.
I've thus become far more inclined to avoid speaker's corner entirely, it feels just like a waste of time. Now you will find me posting rubbish, but I'm not dressing it up as anything else