A: I found a new social networking site.

B: That's cool. What's it called?

A: It's called Tumblr. It's a blog site.

B: Is blogging different from Facebook?

A: It is very different, and much more fun.

B: Why is it more fun?

A: You get to see more people's posts.

B: What kinds of posts?

A: Many different kinds based on your interests.

B: It sounds fun. Is it free?

A: Yes, it's free.

B: Alright, I'll join. Just don't follow my blog.