person two: My backgarden had a bluetit in yesterday
person one:Oh i bought a new television yesterday.
Thats a commentsation
Can be on a wall post, status update, photo etc.
-I have 64 comments from the same person because we decided to have a commentsation and now everyone can read what we were talking about.
-Thank you! How are things Jason?
-Very well. I recently saw you on grandma's album of photographs kissing the dog.
-Oh yes I remember! How is she?
and so the commentsation continues.