How do reactions work?
Reactions allow members to quickly react in different ways to discussions or comments. The Reactions can be used to highlight interesting discussions, suppress abusive or spam comments, and create more nuanced reputation profiles. Users can receive badges for receiving positive Reactions such as “Like”, “Awesome,” "Insightful", "Inspiring", or "Woo".
You can view your reactions here: http://community.myfitnesspal.com/en/profile
Positive reactions were enabled with the intent to provide an additional positive element to the forums and should be used in a manner that supports our Community Guidelines.
With that said, any “Like”, “Awesome,” "Insightful", "Inspiring", or "Woo" reaction that is used on a post that breaks our guidelines will be subjected to removal or a warning. It is not ok to promote posts that violate the guidelines and users that do so will be held accountable as well as the original poster.
For more information about ‘Spam’ or ‘Abuse,' please see this article.