How to use hashtag in twitter?

[ZhengHua]

I've seen lots of them at the end of tweets and there are also some trending ones. I'm new and I'm wondering how to use them and what are they for.

[Boxmatte]

If you want to create a hashtag, simply add # sign followed by the keyword in your twitter update box. For example, you can use something like this:

#wheniambored I play games. If you and others repeatedly use such tags, it will become popular -- or, in other words, it's "Trending" on Twitter. You can also join the conversation by searching hashtags on Twitter search. I hope this helps.