Is twitter like facebook or is it better? and what is twitter?

[Melvin T]

twitter is just telling people what youre doing. makes more sense for celebrities and developers of things. like you come home and you post it, you eat and you post it. i dont think you can send messages, but you can direct a post to someone and it will show @"insert name here" to say that that post was meant for that person, but everyone can see it. and no photos except for small ones. in my opinion, it's a waste of internet space(i know there's no such thing) and everyone's time