> A hashtag is a way of grouping messages together
Like IRC channels.
> not a discrete conversational area with its own topic, access rules, and administrators.
And?
> Can I reply back to an RSS feed? No? Then I guess that's not identical either.
I never made any such claim.
> Can I access usenet without clunky, ancient software?
Uh. Yes? That's the beauty of RSS, IRC, and Usenet. You get choice in the clients that you use.
140 character limits and SMS aren't clunky and ancient?? Really???? The article even mentions the torture of posting links. Such modern software, that crumbles under the mighty URL.
> Is it mobile friendly at all?
Of course Usenet is "mobile friendly". You fetch news when you have internet and can read it off-line at your leisure. If anything, it's the most "mobile friendly" protocol in existence.