Just like with everything else in the digital world, the rules of online etiquette are always changing and evolving. Wonder what a list of current tips looks like? Check out the Top 20 Social Networking Etiquette Tips for Teens on the Psychology Today website. The most surprising suggestion? Limit your use of periods in texts because texting is form of conversation, and periods can appear abrupt and rude. (Of course you have to wonder what English teachers will say about that new development!)