Google on June 27th, launched an early developer preview of Google+ history -- we're starting to bring this save/share capability to other online activities.
Google+ history gives apps an API to auto-share content to a private holding tank on your Google+ profile, which you can then choose to share from. Developers who integrate History will score added discovery and referral traffic from the 75 million daily Google+ users the search giant announced today.
If you're a developer, "you can get started with preview release, with just a few lines of code your app can privately save moments (like a listened song, or a visited restaurant) to a user's Google+ history, and from there users can share those moments with others," Google's Ken Norton posted on his Google+ page.
"To help get the juices flowing, you as a developer will notice your YouTube, +1, Play app purchases, and Instant Upload activity in Google+ history (with Search and Latitude coming soon) -- all for your eyes only, of course," Ken added.
Think Instant Upload, but for almost anything! In all cases, moments in history include attribution of your app.
You can sign up here.