This question has come up a number of times, so I thought I'd quickly go over how to create your own custom URL on a leaf. It's very simple.
Step 1: Create a leaf. Below the title field, in the "URL path settings" box, you'll see a box checked off that reads "generate automatic URL alias." That means if your URL will NOT be customized to your liking unless you uncheck this box.
Step 2: Uncheck the box.
Step 3: Type in the URL you'd like. We recommend adding a dash in between words. Example: black-socks, wooden-cabinets, or best-baby-swings. Do not include "http://www.zujava.com" in the URL. Also, do not include a slash at the end of the URL or any funny characters, or the system won't let you create the URL. We also do not recommend underscores in the URL, because they are invisible when a link appears on a web page (as links are often underlined).
Step 4: Continue creating the leaf and save. Publish when you're ready, and you'll see your shiny new leaf URL in the address bar.
It's that easy.
Have further questions? Ask away in the comments!