What I always do if I want to know if someone has quoted my post is I always go back to my "last post history" and from that point on I'll try to go back to that thread by clicking each one of my recent post, I actually try to go to the next few pages if someone have replied or have quoted my post. And in my opinion it is not that hard or even I consider it as hard task as you can actually see if your previous posts have grammar and spelling mistakes and you can see it in a summary. And if you have quoted a person and you are expecting a reply you can always pm that person telling that you do so, there is no harm in doing that.