Social media is everywhere. Individuals and institutions use it all the time. Social media can influence the way people perceive time and space. The ideas of time and space are changed through social media; the museum space gets bigger and bigger, together with the museum’s influence on aspects such as public debate. The online space is less limited in time: discussing themes with the museum and asking questions become less restricted. How can and should museums use social media to add value to the for online and on-site visitor? Is the visitor’s experience different when social media is used before, during and after a museum visit?