SP2013 : Multi-Farm environment and Social features - A word of caution

If you are designing Multi-farm environments with social feature capabilities, I strongly encourage you to go over this article – What architects need to know about social features in Multi-Farm environments

The key take away from that article is that some of the social features are limited to work if you have MySite Farm and Content Farm separately. If you are looking for full social capabilities in your SharePoint environment, then you need to have both Content and MySite in same farm.