Final answer:
Microblogging is the 7th category of social media, and it allows users to post short messages or updates. is an example of a popular microblogging platform.
Step-by-step explanation:
The seventh category of social media is microblogging. In microblogging, users can post short messages or updates that can be seen by their followers or the general public. is a popular example of a microblogging platform, where users can share tweets of up to 280 characters with their followers. Microblogging allows for quick and concise communication, making it ideal for sharing news, thoughts, and updates in real-time. According to the categorization provided by Dollarhide and Drury, the seventh category of social media was not explicitly mentioned. However, given the context provided, we can address the evolving nature of social media, which includes various types of platforms. The main categories listed are social networking, bookmarking, social news, media sharing, microblogging, and online forum sites.
These platforms, for example, provide users with the ability to communicate instantly and share information, which can have profound impacts on public opinion and decision-making processes. For instance, environmental activism groups can express their opinions through social media, which is also a platform for topics ranging from sports to agriculture. And although not explicitly stated as the seventh category, we can consider blogs and vlogs, which have emerged as significant forms of social media, allowing individuals or organized entities to present detailed content. An example of a blog-based platform would be WordPress, while a popular vlogging platform is.