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.