Rand Fishkin calls the "hash" or "pound symbol" a "powerful SEO tool" that many experts rarely use. Demonstrating ways to use it in his video series Whiteboard Friday, Fishkin says that "search ...

From the Romans to Twitter, the hash sign – or octothorpe – has had a rich history, and now this innocuous little character has found a mighty resurgence as the hashtag. What happened along the way?

Social media has reached a certain level of popularity that is has also become so powerful nowadays. It is not just a special symbol for number or pound, but also a way to make a certain thing trend ...