1. You can attach PDF files just like you do on Skype or Gmail

This is through a service called File Social which allows you to exchange files. It comes in handy for business; say press releases or a video. When you sign in using your credentials on filesocial.com, you can upload files less than 50 MB.

2. You can start a petition

Want to deport someone who's proved to be a pain in the a** in your country? Just use twitition.com and see the results!

3. This was the first Tweet ever

just setting up my twttr

— Jack (@jack)

It was by the co-founder and the co-creator of Twitter Jack Dorsey. It was an announcement of the service. Up to today, the status has gotten over 109,856 retweets.

4. Facebook wanted to buy Twitter but got turned down

At one point in 2009 Facebook expressed interest in buying the social network. This was perhaps because the founders, felt that they had an unfinished business to do.

They had to quench their thirst in changing the way the world communicated. That's why they felt that $500 million in stock just didn't make sense.

5. The first Twitter handles had single names

Just take a look at the early Tweets for employees working with the company. These days it's only possible to use a two-name ID.