Yoyoguy.com also known as yoyoing.com is a website run by Greg Cohen. Yoyoguy.com is the website for Greg's juggling and yo-yoing business called Infinite Illusions. Infinite Illusions has sold juggling equipment since 1986 but did not start selling yo-yos until 1989. Infinite Illusions also hosts the World Yo-Yo Contest.
Infinite Illusions also runs the YoYoing.com website, which features a forum, a blog of yo-yo news, an IRC chat server and hosts a number of yo-yo websites.