Facebook has added hashtags recently, following in the footsteps of Twitter. While privacy settings will still be in effect, the new feature will give brand’s hashtag campaigns a much wider audiences as it can naturally extend to Facebook. It will also give marketers a better measure of engagement than the ubiquitous “like” as it indicates relevance and recency. That being said, do not expect it to have quite the same impact as Twitter as Facebook does not lend itself to real-time conversations in the same way.