Thanks very much for posting this! I welcome feedback on the list and taxonomy.
I also have a couple of updates:
1. I am revising the taxonomy - more categories as the landscape becomes more diverse!  I will post them and invite your feedback.
2. Also, working with Anna Tarkov, we are updating the list of sites on an ongoing basis. We are eager to hear from publishers who think their sites should be on the list. Please contact me via JA or at michele dot mclellan at yahoo dot com.