The 'try it now' feature is nice. Perhaps you should have a default website, maybe based on the referrer?

It doesn't work on google nor hacker news for me:

http://embedded-chat.com/example/?url=www.google.com http://embedded-chat.com/example/?url=news.ycombinator.com

hey gavinjoyce,

Thanks for the advice! A default url based on the referrer could be cool!

It doesn't work on those sites because they disallow iframes to show their pages. Anyway we will work to find a way around this.