Skip to content
Skip to main content
Author: Tony Hirst

What is Twitter - and how can I see who Tweets?

Updated Wednesday, 27th April 2011
If you don't quite know what Twitter is - or if you'd like to discover how to follow a hashtag - here's all you need to know.

This page was published over 12 years ago. Please be aware that due to the passage of time, the information provided on this page may be out of date or otherwise inaccurate, and any views or opinions expressed may no longer be relevant. Some technical elements such as audio-visual and interactive media may no longer work. For more detail, see how we deal with older content.

What is Twitter? Twitter-style birds sitting on a hand

Twitter is a microblogging platform which invites you to share what you're doing with the world - in 140 characters or less.

These short messages are called "tweets".

It also allows you to keep track of what other people are doing as well, either by monitoring their Twitter updates online, or - in some countries - by receiving updates directly to your phone in the form of SMS text messages.

How can I see who's really been tweeting about #bbcClickRadio?

If you'd like to share your thoughts on the BBC World Service Click radio programme with other listeners - and for them to be included in the stream of messages displayed here - you need to add a 'hash' to your message - #bbcClickRadio - to ensure it gets included in the feed.

If you don't have a Twitter account, you can sign up for one at It's currently free.

Get to grips with the changing digital world - explore My Digital Life from The Open University

You can also see who's recently been tweeting about Click, and the extent to which they follow each other on Twitter, by check out the hashtag community graph at (case sensitive...!)

A visualisation showing links between Twitter users

This application searches Twitter for the 100 most recent tweets sent using the hashtag, and uses this list of tweets to identify at most 50 people who have recently used the hashtag. For each of those fifty people, we then look up the (public) list of their Twitter friends (that is, other people they follow on Twitter). If a friend has also recently used the hashtag, we draw a line connecting those two people.

Remember, messages published in the Twitter stream are by individual Twitter users and The BBC and The Open University are not responsible for the content of them.


Become an OU student


Ratings & Comments

Share this free course

Copyright information

Skip Rate and Review

For further information, take a look at our frequently asked questions which may give you the support you need.

Have a question?