I don't think they make anyone look that intelligent, regardless if you know how to use them or not. Half the time I don't notice them when I read a post, mainly because no one uses them.

I know how to use them, but I use them in other instances too. Sometimes miss the shift button, and end up using its slightly unattractive brother, the colon.

Dun dun duuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuun.