The fledgling social media site Twitter was just over a year old on August 23, 2007, when technology developer and self-described “hash godfather” Chris Messina suggested using the pound sign as an ...

The British pound sterling is the oldest currency still in use in the world, dating to the time when Britain was little more than a collection of warring fiefdoms regularly plundered by Vikings. Since ...

If you want to follow conversation threads relating to this show on social media—whether Twitter, Facebook, or Instagram, Tumblr—you know to look for the hashtag: #99pi. In our current digital age, ...

The hash symbol – also known as the pound/number sign, or even the octothorp(e) as Macworld reader Keith points out – was one of the more rarely used special characters until Twitter and Instagram ...