I think you lost the typical user at "whoever wants to download the source". Facebook users don't want to do that. They also don't understand "download" or "source" in many cases. They can click the blue icon in the "internet window".
(yeah - I know that's not as true nowadays as it was at the beginning of y2k, but I'm trying to make a point here...)
Sounds like the perfect opportunity to provide a hosted service.
I've always thought the distributed social site concept had room for both those people who want to run things themselves and for service providers. Kind of like wordpress.
My straightforward answer: because a bunch of my Facebook friends seem to be looking forward to moving to Diaspora and I doubt any of them has heard of Appleseed.
It's possible that in a couple of months Diaspora will look a lot less like a Great White Hope. We will see.
Yeah, it's federated server software. It's meant to be run by people who provide a hosted environment for users.
In other words, it's software for anyone who wants to run their own facebook-like site. Except that all the sites running it connect to each other.
Once it's out of beta, most users will just go to a sign up page of any number of nodes out there (I think there's like 50 out there already? I'm not sure)
(yeah - I know that's not as true nowadays as it was at the beginning of y2k, but I'm trying to make a point here...)