Sending an email to your friend is not a big deal. But do you know that you can put a picture in the subject line of an email? Although you may not find a direct option in Gmail or Outlook.com, it is ...

Consider the tilde. There it is, that little squiggle, hanging out on the far-upper-left-hand side of your ­computer keyboard. The symbol dates back to ancient Greece, though tilde comes from Spanish, ...