A nice post by @adrianshort on privacy and persistence on The Web, including a scary Facebook Like Button insight. http://adrianshort.co.uk/2011/09/25/its-the-end-of-the-web-as-we-know-it/
My tweets and posts live here on my own domain these days.
You can explore them here and follow me on Mastodon instead of Twitter where I'm not currently active.