Think of it this way. The internet is a very large place with tons of different people. Be yourself, you can't make everyone happy here. You're bound to upset someone, it doesn't really matter. Everyone is different and not everyone will get along. Toleration is the best you can really do. Trolling and smart ass replies will obviously get you negative feedback, but at the same time, it will get you some good feedback from people who find it funny.
All in all, it doesn't really matter. Just go with the site and enjoy yourself and if it means anything to you, talk to those you think you have upset and see if you can come with an understanding with one another. But really, it's the internet. Who cares? You likely won't ever meet anyone on this site.