• What’s a #hashtag for?

On Twitter you might see a hash symbol (#)  in front of a word in someone’s tweet, for example #twitterhelp. The hashtagged word will also show appear as blue1 text which means that it’s clickable – if you click on it you’ll be taken to a search results page with other tweets similarly tagged. Applying a tag to a word in your tweet effectively creates a channel, or category, for that tweet which easily lets people view all2 the tweets on that topic.

Hashtags are often used by people at events, eg a conference. Lots of people will be there, they might not be following everyone else but if they all use the same hashtag then they can easily participate in a conversation about the event – and people not at the event can join in from wherever they are.

Hashtags are also much used while watching television programmes. The series 3 finale of BBC’s Sherlock notably generated a flurry of #Sherlock-tagged tweets from people celebrating the programme, but more controversial programmes also allow complete strangers to argue with each other over the internet, via hashtag.

In short, tagging lets you view or participate in conversations on Twitter beyond just the people that you follow (and who follow you) and it lets everyone read all the identically-tagged tweets as a ‘channel’ separate from their main timeline.

Here are the ‘top tweets’ for #twitterhelp and ‘all’ the tweets for the same hashtag, I’ve included the full address so you can see how they’re different. It makes no difference whether it’s #Twitterhelp or #twitterhelp by the way.

Top: https://twitter.com/search?q=%23twitterhelp&src=typd
All: https://twitter.com/search?f=tweets&vertical=default&q=%23twitterhelp&src=typd

Hashtags as commentary
People also use what linguists call ‘commentary’ hashtags – adding a comment or emotion in hashtag form. These aren’t being used to widen the conversation, more as a way of expression.

Further reading

See also
How to search for hashtags, and for other things, on Twitter (2015) by me, on this blog

1 re: blue coloured links – some users customise their colour-scheme so if you’re looking at their profile page links might show up a different colour, however in your ‘home’ timeline you’ll see everything as the same colour

2 When you click on the hashtag on the desktop version of Twitter you’ll be shown the ‘top tweets’ for #twitterhelp first, but if you want to see everything you’ll need to click ‘Live’ in the options at the top. On a mobile or tablet app you’ll probably see all of the tweets.

Searching for words and phrases on Twitter

Hashtags (they look like this: #word or #phrase, eg #Event2015) are the easiest things to search because they form clickable links (click on one and you’ll be taken to the search results page for that tag).

If you’re using a phone or tablet app you’ll probably see all of the hashtagged tweets with the most recent at the top but if you’re viewing on desktop Twitter you’ll probably be shown the Top tweets for that tag first, and you can click ‘Live‘ to see ALL of them.

Screen Shot 2015-07-18 at 00.54.36

To search for anything on a Twitter third party app you’ll likely have either a search box or a magnifying glass symbol which will bring this option up. For really detailed searches I recommend using the desktop Twitter version which has all the bells and whistles.

Basic search is at https://twitter.com/search-home
Advanced search is at https://twitter.com/search-advanced and the list of operators (eg how to modify your search best) are below.

Searching for a tweet sent by someone
Use the from:username format to find all tweets sent by someone about a particular topic. Here are all my tweets mentioning the river Thames: from:jobrodie thames

You can adapt the search string to find tweets sent from:username to:someoneelse keyword to find all tweets sent from one account to another on a particular topic.

Screen Shot 2015-07-18 at 13.13.23

Further reading
Searching for a link (URL, address) on Twitter