In the near future, OneSci is going to be very big (we hope, amirite?). If you'd like your personal pages to be protected from random editing by other people, the only way I'm going to be able to provide this is if you create pages under your own user namespace. You can think of your namespace like a folder on your computer. A folder called:
And you want pages you make to be in this folder, so you would call these pages:
Then, I can write a little code into the Local Settings that says something to the effect of - Only User can edit User/*
If you have pages that are already not abiding by this rule, take advantage of that move tab at the top of those pages.
Get it? Cool. Any questions, leave me a message on my talk page