I look forward to hearing from people who've run successful campaigns. I can share what I've learned:
* Get feedback on your game before you open it for voting. This will help you address issues early on and not in the middle of voting.
* NEVER react negatively to negative feedback or trolling. Most likely, some folks will say some VERY mean, sarcastic things but any kind of negative reaction will be met with 1000x more negativity. Your best thing is to simply ignore the cruelest comments. Trolls are just trying to get a rise out of you so they can tear you down afterwards.
* Don't expect greenlight to be an effective way to market your game - you will need to get the word out before hand and during any way you can.
*The first couple of days are when you will get most of your traffic. Plan and act accordingly.