We're doing the Facebook/Twitter (coming soon) login because we're going to add features that are centric to interacting with your friends on ZIIBRA/ your networks.
OK, but don't forget those of us who either don't use FB/Twitter, or who want to keep separate online IDs for different things (eg if your Facebook identity is wrapped up with your day job and you'd rather your fellow librarians didn't know you were in an avant-garde industrial band named Earbleeder).
disclaimer: not a member or fan of any bands called Earbleeder
We're doing the Facebook/Twitter (coming soon) login because we're going to add features that are centric to interacting with your friends on ZIIBRA/ your networks.