The earliest mention of "channels" in my web archives dates to 1996 . There's not much more than a word about them, but I remember what I was thinking. There were a lot of things I wanted to share , but I didn't enjoy harming unwilling bystanders. I wanted broadcast channels (now we call them streams) that could be carved from my global shares .
The problem, of course, is that my interests are probably not your interests. Emily is my most faithful reader, but she skips my tech shares. On app.net some like my diverse shares, but others favor dialog and social chat. Political opinions? Religion? Right. Limited scope.
So, in the interests of minimizing collateral damage, like a political post appearing in a stream of iOS comments, I'd like an easy way to do streams off my shares.
Happily Pinboard, which I use as a micro-blogging platform publishing to @johngordon (PourOver) and kateva.org/sh (IFTTT), supports those kinds of streams. Every tag has a feed, and when posting to Pinboard I can enter single character tags corresponding to streams. It's not the most elegant UI, but it works.
At the moment though all of my shares stream into one app.net channel (mixing metaphors there, but it kind of works). If my app.net account supported sub-channels/streams (I know that work is in progress, might be done) it seems like either PourOver and/or Pinboard stream-feeds would be a good step towards reducing drive-by share damage.
Update: app.net thread. Hope to see these pieces come together over the next few months.
 My web "posts" from the early 90s are now embarrassing. The web was new then, even Alta Vista was years away. There was so much I couldn't imagine. More subtly, we live in the Randall Munroe web now. I know there are minds at play far beyond my own meager insights.
 Sharebot I am.
 In those days Global Shares were static web pages. I tried to generate things that were a cross between blog posts and Simplenote entries via FileMaker web page generation.
- Filtering my Google Reader Share with Yahoo Pipes 9/2008 - That was my most serious streaming effort, not coincidentally around election time.
- Gordon's Tech: App.net - using Duerig's custom RSS feed to see only root posts from selected people
- Tweeting Google Reader Shares and Notes via feedburner 2010 - Google Reader shares had channel-like options
- Google reader shared items to Facebook 2009 - another example of trying to stream