If you haven’t heard of Dunno, you might want to take note — or rather, let it start taking notes for you.

The Seattle-based company’s Dunno app allows users to jot down any thought or note, and then begins to aggregate related information from sources including Bing, Wikipedia and YouTube, with Google to be added soon. When the user checks back, a list of related hits on that topic is ready and waiting. And the data is shared across your Apple devices.

Sound like a procrastinating high school senior’s dream? Or a journalist on a deadline? Or just about anyone? It might well be. Dunno e-mailed us to let us know that they have 30,000 users and counting. Recently featured on the Mac App Store, Dunno is operating in the same arena as Fetchnotes, EverNote and Apple’s own built-in note-taking app.

The next incarnation of the Dunno will be Mercury 7, launching sometime in the coming days, the company told us, and will sport updates like a new interface, the ability to mark results, and add, edit and remove results. The startup is led by Israel Pasos who previously co-founded DreamInk and PressLeaf.

Here’s the video on Dunno’s Mercury 7 update:

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