Wondering what is the #TheEmptyChair and the #EmptyChair hashtag all about? You would be forgiven if you were thinking that it was a reference to the prophet Elijah, but it’s not. It’s referring to the women who don’t come forward after being sexually assaulted, and so are faceless, nameless, and uncounted.

If you hang out on Facebook at all, or frequent Instagram or Twitter, you may have seen the hashtag #mcm, and be wondering what it stand for. #mcm stands for “Man Crush Monday” (or “Mancrush Monday”), which can also be expressed as #ManCrushMonday.

If you or your kids are a product of the last three decades, you may have FOMO, and not even realize that it’s a thing. FOMO stands for “Fear of Missing Out”, and today’s teens and 20- and 30-somethings, unlike any other generations before them, have maximum FOMO.

If you’ve been seeing the #hmu4atbh hashtag in your Twitter or newsfeed, and are wondering what it means, we’re here to tell you exactly what #hmu4atbh means. But first, you need to understand a fundamental part of it, as, as you may have imagined, #hmu4atbh stands for a seven-word phrase.

In the past few years the term “dark social” has come into play, but just what is dark social – what does it mean, and why does it matter (if it does matter)? Here’s the low-down on dark social.

While Twitter and LinkedIn continually add features to try to be more like the other guys, they don’t always make it easy to find things (for example Twitter’s group message feature, or how to opt out of LinkedIn sponsored InMail). Here is how to find somebody’s LinkedIn wall, such as that of a friend or contact on LinkedIn, where they post updates to their LinkedIn stream.

Shocase (get it? showcase), which launched last month, bills itself as a social network for marketers, but it is more like the unholy love child of LinkedIn and Dropbox, with absolutely no way to actually send a message to others on Shocase, even if they are following you. What kind of social network is that?

Have you heard that ‘selfie sticks’ are all the rage? What? You don’t know what a selfie stick is? We explain what a selfie stick is, and why you need one (or not).

Last week Amy Strickland joined a growing number of people who have lost face, if not their jobs, owing to stupid tweeting. The Booker T. Washington assistant principal had tweeted “Every white father’s nightmare – Or Nah?” above an image of seven interracial couples – white high school girls with their African American prom dates.

From the “Duh!” department, a new study of the personality of Internet trolls reveals that they possess the so-called “Dark Tetrad of personality”, meaning that they exhibit the personality disorders of psychopathy, narcissism, sadism and Machiavellianism, all rolled into one.

We all know the importance, in business, to have a social media team. However, that the Syrian rebels have a social media team in Turkey, set up to meet United States CIA arming requirements may come as a surprise to some.

Social media command centers, staffed with social media first responders known as “social care representatives” are being implemented by companies who grasp what many brands fail to recognize: that social media is a real-time customer service voice that brands can be used for social media successes, or ignored and turned into public social media disasters. Airlines, in particular, are jumping on board.

If you are on LinkedIn and want people to be able to send invitations to connect with you without them having to know your email address, you may be frustrated at trying to figure out how to remove that restriction. Here are step-by-step instructions, with pictures.

Black Twitter’s power has risen in public awareness with the proliferation of the hashtag #IfTheyGunnedMeDown, following the killing of unarmed teen Mike Brown by a police officer in Ferguson, Missouri. But while people are talking about it a lot now, #BlackTwitter has been around for a while.

Almost immediately after Malaysian Airlines flight MH17 was shot down on Thursday, July 17, messages appeared on the Twitter and VK social media site accounts of the pro-Russian separatist Donetsk Republic(DNR) group, claiming responsibility. But the messages, attributed to DNR commander Igor Strelkov, claimed responsibility for downing an An-26 Ukrainian military plane. The messages were then hastily deleted as it became clear that the plane that was shot down was in fact a civilian commercial airliner.