On microblogging sites, a hashtag is used to indicate ________.
A) the number of posts on a similar topic
B) when users are away from their systems
C) when a post links away from the site
D) that a user posts objectionable content

Question

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On microblogging sites, a hashtag is used to indicate the number of posts on a similar topic. Hashtags are used to categorize content and make it easier for users to find and follow discussions on specific topics.

On Microblogging Sites, a Hashtag Is Used to Indicate ________