The blue bird social network was the one that proposed the use of hashtags in 2007, something that a San Diego resident user, Nate Ridder, decided to use in October of that same year, when the San Diego forest fires occurred, giving rise to the first hashtag used by the public: #sandiegofire .
In 2009, Twitter started automatically linking hashtags that were preceded by the # symbol, turning the destination page into a new channel where all the information related to that hashtag was accumulated. This, which senegal business email database seems obvious to us now, was groundbreaking at the time, as it allowed us to go from following people to being able to follow “topics.”
The following year, Twitter started using Trending Topics, which showed the most popular hashtags on the home page itself. From this point on, different social networks, such as Google+, Instagram and Flickr, began to include (copy) the hashtags , each in their own time, respecting the same functionality that they had on Twitter of linking content, and appearing not only on the web, but also in television programmes, offline campaigns... until they became the digital icon that they are today.