There's a Sitemap XML file generated by Voice that contains all websites. Google and Bing read this file regularly, and use it to discover new Voice sites.

Discovering the site is usually quite a quick process - generally within a day of creating it. However, it can take some time before the search engines fully crawl the site and add it to their index - something that we don't have any control over!

I can see from the Bing webmaster tools that it has found your site, so I expect it will appear in the search results soon.

Thanks

Joe