FAQ's about LID from Johannes Ernst's Blog - I think they apply to the work happening around XRI/XDI and Identity Commons stuff. I am going to do my part by working on doing some essays with lots of simple diagrams to explain the ecology of organizations and roles. Hopefully we can also do a short video about it too.

What's your measure of how complex a single-sign-on technology can be so it can be adopted broadly?

A weekend of implementation effort, maximum. Here's why: SSO only makes sense if basically everybody can implement it. That includes a lot of players, from your 401k plan (who could probably afford a lot more than that) down to the message board of the parent-teacher assocation that's run by Joey's dad on his home Linux server. Joey's dad is not going to spend more than a weekend of his time to make it work. He's also not going to go out and buy expensive software. He might download some Perl, but that's about it. Ergo: one weekend, no more.

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