yes... if you go to the person's profile, under their name it says that you can see the pictures, send a message, and poke.
Not possible at once
No only your firends can see them. If you are talking about people of Facebook which you are no friends with then no. Your friends that do not have facebook can not see your profile or posts.
You can see your friends' posts on Facebook if they accept your requests to be their friends.
Poke them, or post a thank-you on their wall.
like a facebook poke?
It is simply just a poke, a fun little feature on facebook where people exchange pokes. If alot of people are poking you it is a sign that alot of people like you as a friend or colleague.
The original purpose of facebook is to communicate our friends and to see the information of of your friends
See what? Be specific
That depends on the privacy settings used.
you cannot use the "chat" feature without being friends on facebook. you can however, send a message or poke the user.
Yes.
Buddy poke is an awesome game on facebook