You're right it does seem crazy that you can't register your home address since it's online-based. There's still a lot of work to do with regard to legislation and online commerce.
Eric's response seems to be a…"
I'm a power user of social media and I find that the Twitter clients are the best. I use Twitter for Mac and I manage multiple accounts with ease. When new tweets/@mentions come in, it a light comes on indicating there's new stuff…"