So here is a way that can help u to elicit much information about any website.
Further it depends upon u how u use that info.
what u have to do it just open Google then in search bar type the following

site:www.example.com

here u replace example with name of website whose information u want. then hit enter now c carefully at search results they will be very helpful for hackers ;-)

i tried this following one and the amazing results.

site:www.hotmail.com