The document discusses the importance and benefits of semantic technologies and the semantic web for scientific publishers and researchers. It notes that researchers prefer online journals but are reading fewer articles and for less time per article. Researchers want to quickly evaluate articles and isolate those worth deeper reading. Semantic tagging of content allows for more precise searching, related content linking, and discovery of hard to find information. Publishers are implementing semantic tools to enrich content by tagging entities, facts, and relationships to improve discoverability and navigation. Examples from the American Institute of Physics and Royal Society of Chemistry are provided that leverage semantic tagging of content.