Add some identity verification; Maybe facebook/twitter signup etc.
I suspect many in the HN community are associated with the IEEE and ACM. You might want to consider adding these two orgs to the list. (Disclosure: I am an IEEE member and a past ACM member). Both these orgs have great digital libraries and I have no idea why they are so expensive to access. Can someone with some experience serving on IEEE/ACM committees share some info on the financials?
Consider posting and starting a discussion on Chronicle.com. You might get support from a lot of people in the Arts & Humanities as well.
Why should the general public care about this issue? They pay for this indirectly through college tuition fees. Try to share this information with some parent bodies and ask them to pressure universities.
Get some alumni bodies to sign up. They have a lot of clout in Universities.