One of the common distinctions that comes up is whether you're using tags or categories ("tags-as-categories") for your posts. The distinction is that categories are fewer in number, generic, chosen beforehand, possibly hierarchical (sub-categories) and p
C. Yeung, N. Gibbins, and N. Shadbolt. Proceedings of the International Workshop on Emergent Semantics and Ontology Evolution (ESOE2007) at ISWC/ASWC2007, Busan, South Korea, (November 2007)