Facebook killed blogs because when I want to find my friend I just searched for their name, and if I was their friend their content made it to my wall.
Because of Facebook's convenience my friends use it, and because it's a walled garden I am compelled to use it to.
My dream for this kind of thing would be something akin to DNS but for identity (pseudo or not), and an open API for content.
So, Adam knows nothing about computers and creates an account on Facebook, which creates an IdentityDNS entry for him on his behalf.
Belinda is also not that techy, but likes G+'s layout more, and so has an account on there instead. She also has Twitter.
Zer0cool is a massive nerd, and has their own domain and hand-written blog software. They went to some website somewhere and created their IdentityDNS entry, and has hooked up and validated their blog on their domain as their content.
Adam can search for Belinda and Zer0cool in Facebook, which in turn searches IdentityDNS. He can add them to his Facebook wall, and their posts will show up in some fashion (maybe Facebook shows its own posts normally and only shows titles of external blog posts, FB can do what it wants). Belinda can do much the same with G+.
Zer0cool has also added Adam and Belinda, and reads their posts through muttdentity, a mutt clone but for identity stuff.
OR something. I don't know. Effectively something that means that I can choose FB because I like how it displays photos, or because it has the best mobile app, or because it has lots of storage. Or I can run my own blog because I want that control. ETC.
I shouldn't have to use Facebook just because that's all my Dad can work out how to use.