what does hashtag mean?

[Bronson]

as in when someone uses it on twitter

[colossallunchroom024]

its simply a way to put your "tweets" into a category or start a trending topic. #answeringquestions

[Andyallie]

hashtag just connects their tweets and puts them into a group of people who have posted related sweets such as #waterfallwednesday where people post pictures of waterfalls on wednesday

[Dinosaurs As Mates]

it tags a word so that you can search for it on twitter.

[Ball 5]

When talking about a subject you can use a hashtag ( # ) in your tweet. people can search for that hashtag term and read all the tweets on the particular subject.