Answer:
1. Microblogging.
2. Social network.
3. Discussion forum.
Explanation:
1. Microblogging: it is an online platform or web resource designed and developed to avail end users with the opportunity to provide short updates to followers. One of the most commonly used microblogging platform in the world is Twi-tter. Others include Tumblr, Pinterest, WordPress, blog etc.
2. Social network: it is a software application, online platform or web resource designed and developed to connect individuals with common relationships or share similar interests. Face-book is one of the most widely used social network in the world today. Other social network include You-Tube, Hangout, Insta-gram, etc.
3. Discussion forum: it is an online platform or software application designed and developed to create a space for various individuals, especially registered members to share knowledge on a specific topic ranging from sports, education, comedy, movies, jobs, politics, romance, crime, books, food, etc. Some examples of discussion forum are Reddit, nairaland, etc.
