everything can be a resource..
- earth observation metadata
- description of datasets/catalogues
- description of single image/product, added-value products, value-chain
- description of features inside a single image
- description of auxiliary/ancillary materials
- other relevant resources
- description of services available (eg map servers)
- description of added-value chain services
- description of other information layers
- description of other resources
- description of projects
- description of simple web pages (RSS - "RDF Site Summary")
- related news, related science information,
- other
- persons: researchers, users, decision-makers...
- events -
- calendaring, scheduling
- client capabilities
