your own domain, with a wordpress.org blog, free. does comments and moderation (better when you use some anti-spam like geoip block) plugins so visitors can ge

your own domain, with a wordpress.org blog, free. does comments and moderation (better when you use some anti-spam like geoip block) plugins so visitors can get more then rss feed, but get emailed notifications for new posts and for comment threads. people who don't want to do updates / backups (can be automated) - can just get a wordpress.com thing going, has most functions, and has a user to user subscribe kind of functionality for other wordpress.com users. There are some plugins to cross post with twitter and fbook, but fbk apis have changed a few times and I don't use it, so no idea if they work awesome or have issues these days. better yet add the buddypress plugin and get your friends to get thier own profile on your network and get others to do the same.