Want to help Mastodon grow?
Frame a picture of the Mastodon logo, put it on your or someone else's grandma's coffee table among all the photos of your relatives! Your grandma won't notice it there, but all your aunts and uncles will be curious. They'll wonder who is this new relative?
In an attempt to research this weird looking new relative, they will stumbled upon the register page, and if there's anything your aunt and uncle is good at, it's signing up to random webpages. Bam! 💥 New user!