did this right way for make table notification some thing like facebook
table notification
id , status_id , comment_id , reply_id
1 1 null null
2 null 3 null
now table for save on it who make the notification some thing like user1 and user2 and user4 comment on your post
notification_maker
id , notification_id , user_id , info
1 1 66 comment on your post
1 1 77 comment on your post
i dont know maby some thing like this andy ideas about how to make tables for notification like facebook