This is cool idea I saw via the Re-nest website, the only thing is that I can envision this going really well or not so much. This DIY inspiration comes with a caution to use in moderation. Out of the five photo examples I saw of people doing it in there homes, I only liked two, the second one I would use in a kids room or perhaps somewhere else, but not with pushpins. I would consider doing this in our office one day (one I can actually walk in there).
The thing I like most about the first photo is that the line quality is reminiscent of the DaVinci drawing of the Virtuvian Man or a map of the world. Those two examples of art are more classic and so that correlation, I think, enables that particular string art to work very well, especially at that scale on the wall.