Remember my favorites

Hi, I have quite a few post on on of my sites and people have asked me if there was a way of having a system that allows people to tag a post as on of their favourites within wordpress. For instance someone reads part of a post they have found on my site and want’s to come back to it at a later date to finish reading it, but they forget where it is and have search all over the site to find it.

What would be nice is if they could tag a post and when they come back to the site they can look at the posts they’ve tagged and carry on reading. I suppose something like a shopping basket for posts.

Hope you understand and hope someone knows of a way to make it happen, I think it would be neat for people with limited web knowledge and for people who have many favourites on there machine already.