I love the app Plag.
Other social networks are based on your ‘network’ of friends or associates. This one does not depend on connecting or knowing anyone first, and allows whatever you post to be swiped up (and passed on) if people like it, or swiped down if they don’t want to pass it on. You can post text, an image, video, link, or even create a multi-option poll.
Here’s a video of one of my favorite parts, where you can see a map animation of the order that your post spread.