1. Facebook is not private. When you write on someone’s wall, everyone can see it. All your friends and family and all their friends and family. And depending on how you’ve set your privacy settings, potentially everyone on the internet. If you’re a mom/dad and your son/daughter is on Facebook and you’re lucky enough that he hasn’t continually “lost” your friend request and has actually friend-ed you, don’t use his wall to remind him to take out the trash/take his vitamins/that you love him. He know, Mom. He totally knows.

2. Having the caps-lock on makes it seem like you’re yelling. No, I don’t know why, it just does. People tend to not like it when you yell at them constantly. No, I don’t know why, they just don’t. There are only a few people who are universally approved to write in all-caps all the time. I’ve compiled the following list for your convenience.

• Zodiac Motherfucker
• Samuel L. Jackson

3. Alternately, never capitalizing anything makes it seem like you’re either (a) whispering or (b) lazy. Or possibly that you’re a teenage girl who chews fruity-flavored gum, twirls her hair with one hand, and pecks at the keyboard with the other hand. Or that you’re one-handed.

4. Comment sections are strange places. They can make you feel out-of-touch (A.V. Club), make you feel like you’re part of a great big geeky community (kotaku.com) or make you want to claw your eyes out (boards.4chan.org/b/). Think of them like the Wasteland in Fallout 3. You never know what you might stumble across, but it probably isn’t going to be ice-cream and unicorns. More likely, it will be cannibals.

5. Web-comics generally aren’t funny until around the 50th one.