@F O S W+
Simple way to explain #federation
to people who don't understand why #facebook
/ et al sucks:
Imagine you have a T-mobile phone plan, and your friend has Verizon. In order to call, or send a text, or in any way communicate from your T-mobile phone to their Verizon, you must first sign up for an account with Verizon, and agree to their terms of service. Would you ever accept that?
What if the only way to actually do it from your T-mobile phone, is if you wrote a special app using Verizon's toolkit, and using your custom app on your phone you could then connect to Verizon with your Verizon account (after accepting Verizon terms of service) and then could finally txt or call the Verizon friend from your phone with your custom code written using the Verizon API.
Make any sense? Well that's what twitter, facebook, and the rest all are.