Where Are the RP’s?
This was a discussion regarding various aspects of identity federations, e.g. the prevalence of IDPs on the "open internet" and the dearth of RPs willing to rely upon them.
Jeff Hodges points to these papers which are relevant to the discussion...
LANDAU, Susan; MOORE, Tyler. Economic tussles in federated identity management. First Monday, [S.l.], Sep. 2012. ISSN 13960466. Available at: <http://firstmonday.org/ojs/index.php/fm/article/view/4254/3340>. Date accessed: 09 May. 2014. doi:10.5210/fm.v17i10.4254.
Sun, S. T., Boshmaf, Y., Hawkey, K., & Beznosov, K. (2010, September). A billion keys, but few locks: the crisis of web single sign-on. In Proceedings of the 2010 workshop on New security paradigms (pp. 61-72). ACM. <http://www.nspw.org/2009/proceedings/2010/nspw2010-sun.pdf>