Users and advertisers can use this feature to search the Facebook page for real-time topics

The "#" topic tag is one of Twitter's most iconic features, where users can label "#" on specific topics and search social networks for new or critical comments with "#" topics.

The "#" topic tag is a useful feature that allows users of social networks to participate in the discussion of real-time events such as political debates, television shows and sporting events, and advertisers can better target groups through this label.

Justin Osofsky, Facebook's platform partner and operations director, said: "Now, 88 million to 100 million of users will be able to log on to Facebook in the prime of the TV show, which is Osovsky for our partners." For example, the recently hit TV series "Game of Thrones" was mentioned 1.5 million times on Facebook. ”

But Facebook also says the company has yet to find a simple way to get a fuller grip on what people are talking about and what's happening.

Facebook's "#" topic tag feature differs from Twitter in that the "#" topic that Twitter users make is visible to everyone, but on the Facebook platform, most of the "#" topics that users send out have only their friends to see.

Facebook says the "#" topic tag is its first feature to focus on topic discussions, and will later launch several related functions.

Since Wednesday, Facebook has pushed the "#" topic tag feature to about 20% of its users and is expected to experience it in the coming weeks.