silverpill@Profpatsch @sabrinkmann @grindhold Yes, feature negotiation increases complexity and should be used sparingly. Consequently, I am in favor of duck typing, which means looking for the properties you care about instead of types .
A micro-blog sees content and attributedTo, displays a post.
A FEP-0837 marketplace sees publishes and reciprocal, displays an offer.
All GNU social JP content and data are available under the