From a tech tool to a pop culture reference, the hashtag has come a long way since it was first popularized by Twitter. And even Twitter, at first, rejected the idea, which came from Chris Messina ...

So with Twitter in the news, we wondered about one of its most well-known symbols -- the hashtag. A viewer named Valerie asked: How did the pound sign become a hashtag? Hashtags are used on ...

And what's interesting is that the hash sign has always had a unique relationship ... After fiddling around with different designs, they settled on a 3-by-4 square, but they were worried about ...

Their index has no entries for trolls, abuse, or bots. On Twitter, hashtags -- literally, the # sign in front of a word -- were the brainchild of user Chris Messina, not a feature built in by ...

Last week, McDonald's launched a Twitter campaign using the hashtag #McDStories; it was hoping that the hashtag would inspire heart-warming stories about Happy Meals. Instead, it attracted snarky ...

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 ...