I don't think "I don't like Facebook" is limited to dev-centric populations. I know people who have nothing to do with software development who refuse to get Facebook accounts. And then there are the folks who use Facebook but refuse the install any apps (about half of my Facebook friends fall into this category). You need to offer something other than Facebook auth if you care about having the broadest reach possible. This Mozilla persona thing has a pretty intuitive workflow for signing up with any email address.
Exactly. Facebook isn't universally trusted and liked even by Facebook users, especially across external functions such as commenting on websites. Outside of Facebook, people often avoid signing in to post comments on websites.
Often the comments we want to write on websites have absolutely no business being concurrently posted back to FB. People like contributing without disclosing or offering their FB identities or sharing every micro-activity. And fair enough.
Not everyone is comfortable with fronting up to an unfamiliar website and saying "hi, I'm John Smith. Here's my comment about religious persecution in South Asia. And don't forget to Like me on Facebook. Sign up now to connect and share with the people in you life"...
In other words, the less clunky FB social plugin mess on websites the better. I hope Persona goes well.
