I have seven folders of bookmarks. Each for different topic/subject. Whenever I come across a new link which I will need to refer to in future, I store it so that I can open it from the bookmark. If I am not going to need the bookmark or no longer interested in a certan subject, I delete the bookmark or the whole folder. Some of the bookmarks have been there since 2010 because they are of the tools I still use.
I use Chrome. I like the fact that the bookmarks are synced to my Android phone and work computer. That way they are available whenever I want to use computer.