I sure think so!
Second; symbiotically, social media outlets such as Amazon and myself as a social media professional are directly supported. The facilitator of the transaction as the middle-man supports their network and I receive a little something for my creation of original content based on my unique observations.
Third; for the readers of original content who may be unfamiliar with a particular artist or concept, these links introduce new ideas and experiences. Affording the audience a chance to grow is one of the most rewarding aspects of teaching.
Plus; when it comes to deciding if a particular book or work might interest a reader, comments sections and forums provide the perfect opportunity to crowd-source solutions from a database of often diverse opinions.
Bonus; flame wars are often more entertaining than the original product or content that ignites.
These are just a few of the reasons I monetize my blog with social media links, what are some of yours?