How do I get more exposure for my website?

[Jake B]

You have a good concept going there, just needs to be better arranged. You can do videos, infographics e.g. arrange the mistakes by category, list the top categories or a funny videos of mistakes, learning from mistakes, historical mistakes and so on. Then you can use all the methods you mentioned above to create a cycle getting more people to submit mistakes and making your mistakes collection richer to spin out more unique content, marketing it and rinse and repeat.