article thumbnail

The History of Social Media in 33 Key Moments

Hootsuite

It wasn’t until a couple of months later, that the #SanDiegoFire hashtag was sparked to aggregate tweets and updates about the California wildfires. Foursquare’s geolocation API was used for geofilters and location tagging in apps like Snapchat, Twitter, and Instagram. and really set the tone for future tweets.