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Rss and email updates.
I publish 'the type of info that'd normally be in a newsletter' at 'Notes'… for which free email and rss updates (brief title/teaser/link notifications of 'new stuff available on site') are available.
Not only, but also…
And don't forget Twitter, for loose and free-rolling conversational stuff.
Currently, I'm not actively using Twitter… but this is temporary.