Hands down, Wikipedia is an incredible feat. People from hundreds of nations working together to build something. It is an amazing project. Inspirational, even.
So don't ruin it.
Take a second and think: is this edit going to help anyone else out? Am I making good use of other people's time?
Once you are sure of that, only then you should feel free to click edit this page.
If you don't think it should be published, don't publish it.
By the way, feel free to edit this page however you like. Just be aware that vandalism is going to be reverted.