Pinning a tweet allows you to highlight a specific tweet on your Twitter profile, making it the first tweet visitors see when they visit your page. This can be useful for promoting important announcements, showcasing your best content, or providing new followers with a quick overview of your brand or interests.
To pin a tweet, simply click on the three dots in the top right corner of the tweet and select “Pin to your profile.” The tweet will then be moved to the top of your profile and will remain there until you unpin it.