Whether you use hashtags “#” or not, they have made their history since first introduced in 2007 by Twitter. They became the filter, not only for Twitter – also for special topics, for branding, for trends, and for what not.
Although many people ignored hashtags from the beginning on the social platform, they find more and more acceptance today, now that people know why they are in the world of social web communication. Their real increase in use cam with the year 2009, when the 140 character network decided automatically linking anything preceded by the pound sign.
Nowadays, if you want to get retweets, you better use hashtags as these tweets are 55% more likely to be shared than those without any #. Even Google+, Facebook, Instagram or Vine have started to accept the hashtag value. And Offerpop now introduced an interesting infographic which shows the history of the hashtag.
PS: Interesting to see that more people use hashtags on their mobiles than on their laptops or desktops. Mobile information is consumed in short time periods, so you better make sure people grab your information when they jump on the bus, the train or at a break at an event. Hashtags are the access keys!