non - encoded :
Here's a handy link to help you encode your URLs to this format : URL Coding Converter
A second recommendation - use URL shortening services from http://bit.ly/ , http://shorturl.com/ or another such service (Please note you still need to encode the URL's ). Using these types of shortened URL's gives you two advantages - 1. you can track click through traffic. 2. - You can post shorter links on Twitter posts, FaceBook status posts and other such postings.