Autocorrect typos. Some are easy to notice and fix before posting but others when I'm in a rush I barely notice and they totally ruin the integrity of an otherwise good post. *stares at them* 

Special kudos to the ones that are so bad they even make my poor role play partners scratch their heads and go "dude WTF"! I'd turn it off but sadly I need it to fix my other fast-typing errors so am at a bit of an impasse there :lol