Hi Zewen Ding,
Thank you for sharing your blog post 1, in which you provide excellent responses to each question. You provide examples that clarify what social media means to the network using social media, which helps people understand rather than simply reading a definition. Motivation is necessary for people to do something, as you mention that the networked public provides so many opportunities to motivate themselves to do better, such as working opportunities. I also appreciate you explaining the impacts of digital identities. People can see our digital identities and see what we like, as well as what we think about some social problems, and if we must search for groups, we cannot post anything negative.