Context: the JISC communities digital environment
Lots of diverse content: abstracts, full text, bibliographic dbs, images, moving images, learning materials, maps, sound, catalogues,websites…
Delivered via different services:national data centres hosting & delivering content by subject, domain,type,COPAC, Zetoc,RDN, RSLP projects, NOF projects, publishers,local information, other data providers…
Mostly based on key standards but ultimately content delivery is via different interfaces.
For the user this means: navigating between various services, having to get to know diverse user interfaces- probably missing out on a lot of relevant information, frustration ( User = person or machine).