A little while ago I received an email with a link to a neat website and a one word description: #hot. It was a sexy site, but I called the sender out on using a hashtag in an email. Who uses a hashtag in an email? He replied saying that it was the “new grammar”. Maybe he’s onto something. After all, Facebook has been toying with hashtags since its acquisition of Instagram last year. It wouldn’t be so far fetched for Google to include hashtag sorting functions in Gmail in the near future.