Another perspective; blogs and wikis are two use-cases of essentially the same interaction. The different designs guide and inspire people how to use them. Then

Another perspective; blogs and wikis are two use-cases of essentially the same interaction. The different designs guide and inspire people how to use them. Then, they discover that the use-cases are beneficial. In some ways, all of social media consist of apps tailored to specific use-cases that haven't been new for decades, but they "invite" normal people to use them.