topping a plant?

Could someone please explain topping a plant and it's advantags and disadantages if any?

Here is a great informative thread on topping from a veteran grower here. Uncle Ben knows his stuff! Read at least the first few pages and you will learn some useful info...
Topping will keep your plant shorter and bushier, and may increase yield over single cola plants.

https://www.rollitup.org/advanced-marijuana-cultivation/151706-uncle-bens-topping-technique-get.html

thats the same method i unknowingly used...and lemme tell you..ohboy its worth it..everytime.