I think it would be nice to have a book mark feature where users can bookmark and un-bookmark topics of their interest in the discussion forum. Right now we have to search topics of interest or store the links somewhere. Don't know if its possible!
This?
Oh, it already exists! Thanks! Sorry I didn't notice it.
No worries, I've done the same thing 
But bookmarked topics are jsut hilighted but they are not listed somewhere in left had side menu as most of the bookmarks do in a browser.
They are listed in your profile. Click on your name/photo in the upper right. Click the bookmark icon. If you have too many, click the little arrow at the bottom of that list.
ok got it! Thanks.