Do you know any popular websites using fragment identifier or hashbang (#!) in URLs?

[esiow2013]

Thanks in advance!

[GPainter]

You may find the following helpful if you want to use them for something other than blackhat seo

http://support.google.com/webmasters/bin/answer.py?hl=en&answer=174992

and

https://developers.google.com/webmasters/ajax-crawling/docs/faq#whereinresults.

You will also see the second URL has some examples.