Okay, these kinds of things have been p1ssing us off to no end. It's time we help stop it.
Look at the date the comments are posted before you post.
Seriously, it's annoying when you post replies to comments that are more than 1 year old. Figure it out, you're late to the party... CONVERSATION OVER!
Common sense guys. Click Reply if you're continuing an already existing conversation, it makes no sense to post a continuation of an already existing conversation as an independent comment.
Do not upload duplicate images.
Yes, just this. It doesn't get any more specific than this.