How to post in any person' facebook account

Question

Don't have any clue so thought to ask QueryHome only.
1. Whenever user ask a question there should be checkbox.
2. If user click on check box and after the submit button the post should be available to facebook profile to increase the answer probability (only if user is logged in on facebook).

Any clue, any pointers are welcome.

Answer 1

I am assuming that you want to post someones timeline, you can do that if he/she is your friends and he/she has allowed friends to post in his/her timeline.
1. Type the person's name in the search bar at the top of your page.
2. Click the box that says Write something to... and choose what type of story you want to share (ex: Post, Photo/Video)
3. You can also: Tag friends. Pick a date for the story. Add a photo. ...
4. Click Post.

Let me know if looking something different.