You press the x in the corner of the comment that says delete
Chat with our AI personalities
You don't. It's gone.
On facebook, only some pages allow this feature. If a post allows this, you will be able to check by clicking under your friend's comment. If it shows your picture and the "add a comment button", you click on this box and type your comment.
When your face book comment deleted by another parson you will see a triangle box picture (just like English letter A) next your name on the comment area. and when you take mus on this picture box you will see " comment deleted"
unless you are on a discussion wall / a mutual friend's wall, you cannot like someones comment or status
Facebook does not notify for visits to a profile. If the Facebook page is private, then a request to be a friend must be made and accepted before a visit is allowed. Only upon comment, is a visit confirmed.