Vines create a massive trend throughout the world in just 6 seconds. Only 6 seconds. There are many reasons for this duration. Some can explain that because human attention span has been reduced to no more than 8 seconds so vines can settle down within that amount while others argue that such a short duration is easy to make and people are not hesitant to watch.
Twitter becomes one of the most dominant social networks with a words limit of 140 characters. Just 140. Back to 2006 when it was founded, Twitter was designed to be used via wireless carriers’ text-messaging services with 160-character limit. Therefore, Twitter’s creators took out 20 characters for the user name and there we have the magic number.
But both of them developed significantly out of expectation and the above arguments. The reason lies in the nature of their usage: capturing the ‘now’. In order to be instant, you don’t need much. You don’t need to many visuals as well as too many words. Therefore, the success of Twitter comes from its origin: text messages. With just 140 characters, you are able to capture your ‘now’ and let people know. Moreover, others are not hesitant to be able to know your ‘now’ by reading a 140-character tweets, just the same as the text message from you replying their text. And with a whole social site with networks of hundreds or thousands followers, you are able to capture the ‘now’ of the whole world.