Sharing and annotation: Instapaper's supporting apps

I haven't found a replacement for the rough annotation-share-feed ecosystem that had grown up around Google Reader Social (RIP). I've given up, for example, on using Twitter as a Reader Social replacement.

Yes, I miss Google 1.0. I even miss Microsoft these days.

So I'm continuing to explore the pieces of the post-Google world; trying to see where this micro-market may go. This is poorly tracked territory, but today I came across an unexpected guide in the Instapaper: Supporting iPhone and iPad Apps page.

Instapaper has an ecosystem, and although it doesn't have a feed, it will post to Tumblr, Twitter and Pinboard. Tumblr has a feed (barely), Twitter can be turned into a feed (awkwardly) and Pinboard has a feed (and, mercifully, it's not free).

So what can I do with these pieces? Can I archive the output of Pinboard as WordPress posts?

I'll find out.

See also:

• Gordon's Tech: Pinboard imports Google Reader JSON exports

Update

• I tried Instapaper's bookmarklet, but it hangs in Chrome with a "saving" status in the tab.