Our posting guidelines can always be found in our FAQ as well.
I only report a question/comment/etc when I feel like it violates the site's rules. I don't see how that's cowardly. The rules are there for a reason. Sure, if a person reports you just because they have a personal vendetta against you is annoying. But if you haven't violated any of the site's rules, there shouldn't be a problem. No matter how many times they report you, if you haven't broken any of the rules, your posts won't get taken down. At least the admins give us the freedom to choose our own avatars, as long as they aren't offensive or tasteless. Let's not abuse that freedom. They could just as well force us to use their default avatars.
Freaking idiots! People can't take freaking jokes! Everybody is so damn f&%king serious.. You know what people you have reported my comments! Have fun in life! Everyone is so freaking black and white! Just because you see someone with colour on them makes them "reported worthy" oh suck this!
Some of my questions get removed as "Offensive" and I am not entirely sure why, but other than that, I personally report things only if they truly deserve it. But it is true that sometimes, the reason isn't entirely obvious, aka a reported post is more likely to be removed than not.