1. discoverability
   1. web 2.0 publicity
      1. twitter
         1. BERLiN
      2. very high visability and encourages high use
         1. OpenSpires
   2. search engines
      1. metadata
         1. JACS
            1. BERLiN
            2. OpenSpires
         2. pedagical types
            1. BERLiN
      2. OpenSpires
      3. OTTER
      4. Unicycle
   3. other repositories/community spaces
      1. BERLiN
      2. OpenSpires
   4. subject communities - essential role
      1. OpenSpires
      2. OCEP
   5. media type filter
      1. BERLiN
   6. feeds
      1. RSS
         1. XPERT
            1. BERLiN
         2. BERLiN
         3. OpenSpires
         4. OTTER
         5. Unicycle
      2. enhanced metadata
         1. BERLiN
   7. tagging
      1. OTTER
   8. within VLE discoverable during course creation
      1. BERLiN
      2. OpenSpires
   9. institutional website
      1. BERLiN
      2. OpenSpires
   10. marketing/comms strategy
       1. OpenSpires
   11. subject centre portals
       1. OpenSpires
2. usability
   1. BERLiN
   2. Unicycle
3. tracking
   1. downloads
      1. BERLiN
      2. OpenSpires
   2. rating system
      1. OpenSpires
   3. comments
      1. OpenSpires
   4. google analytics
      1. OCEP
      2. OTTER
   5. iTunesU stats
      1. OpenSpires
4. sophisticated content harder to repurpose
   1. BERLiN
5. activities around use
   1. BERLiN
6. surveys of use
   1. BERLiN
   2. OCEP
   3. OpenSpires
   4. OTTER
7. complex and contextually bound materials need explanations
   1. OCEP
8. student OER use needs researching
   1. OCEP
9. evidence of other institutions using content
   1. OpenSpires
   2. Unicycle
10. evidence of students using content
    1. OpenSpires
    2. BERLiN
    3. OTTER
11. user feedback provides significant motivation
    1. OpenSpires
    2. OTTER
12. real demand not yet understood
    1. OpenStaffs
    2. OTTER