Significant Issue: Access to Data
	• Tailored push; also pull (“My Intelink”), including changes of sufficient magnitude – Subscriptions and data descriptions for matching against subscriptions may be best done using hierarchical ontologies • Crawlers of value, but may have access control issues • Uncertainty of data (both by source and about source) • Inference-based retrieval of information • Pedigree critical to maintain • Indexing of markup important for speed of access