Feature-Marking/Flagging Threads as Read

Dear Experts,

I have a question related to SDN usage and need your expert advice on this.

I usually read threads in SDN forum topic wise for enhancing the knowledge and sharing among the community. Say for example- I am searching the thread on Vendor Master. I found 312 thread on this. I will be interested to read all but it won't be possible to complete all this in a single day or at a continuous stretch.

What I am looking at a feature is what ever I have read I should be able to mark it or flag it as read/already read. When ever I revisit SDN next time and search the same topic I should be reading the once which I have not read. By the way of marking the threads it will be easy for me to identify that these have already been read by me.

On daily basis the volume of threads are increasing.

I am looking at a stuff where a reader can identify clearly what he has read (history) and what has not been read. Simple to say what we do on books by putting the tag that this topic has been covered already.

Currently, this feature is will a color icon but it is not serving the purpose what I am looking at.

I request you to guide me on this, if there is already a way in SDN to identify what I need. If it is not there can this be introduced in forum ?

SDN is a very excellent knowledge enhancing repository.

Regards

Rajesh