Build Features are like the basic block entities that make up a Build Configuration. They can be made up of one or several processes and attached or detached from any Build Configuration once copied or traded.
Once a Build Feature has been created, tested (To ensure it works) and set to be displayed. The Build Features would appear at the community marketplace immediately for other builders to copy and use.
Builders who managed to copy/trade your Build Feature(s) will have access to free updates from their master Build Feature(s). Anyone can also comment and (or) report any malicious activity they've found on your Build Feature.