[IDEA] "Suggested threads, but only by your own choice"

What if a forum would have a feature which allowed users to write down a few tags or keywords that interest them.
Every once in a while the forum will generate a list of topics that have had those chosen words in them and present them somewhere on the screen of the forum.

Compare it to fishing if you will/ It’s somewhat like casting out a hook with a sensor on it, and getting a message that tells you that tells you which fish is taking the bait or skimming it.

This kinda came to me on the spot and I was wondering if this would have any merit.