Fat Burners are generally a marketing gimmick - they may help boost energy in a diet with a large calorie deficit, but other than that it's down to marketing. I've tried several different types but never had much effects (excluding the Ephedrine-based one, which I think is illegal here in Qatar as I haven't seen it anywhere).

Steady state cardio exercise (e.g. running at a near-constant rate for an hourr) isn't the best for fat loss, as you'll end up losing some muscle too - try Googling HIIT, or "High Intensity Interval Training".

"Never argue with idiots. They'll drag you down to their level, then beat you with experience."