=== Código HTTP : 301 ===

HTTP/1.1 301 MOVED PERMANENTLY
Content-Language: en
Content-Type: text/html; charset=utf-8
Date: Sat, 13 Dec 2014 00:39:32 GMT
Location: https://prezi.com/qnfzhw3kz7cy/?utm_campaign=share&utm_medium=copy&rc=ex0share
p3p: CP="NOI ADM DEV PSAi COM NAV OUR OTR STP IND DEM"
Server: openresty/1.7.2.1
Set-Cookie: __putma=810ed658-8260-11e4-aad4-22000b1b0f82; expires=Fri, 08-Dec-2034 00:39:32 GMT; Max-Age=630720000; Path=/
Set-Cookie: _ptref="Imh0dHA6Ly9vaXJwZW5zYXJoYWJsYXIuY29tIg:1Xzak8:FgKr7fDF1Qjd03cIyjrGdXaFtbI"; expires=Sun, 14-Dec-2014 00:39:32 GMT; Max-Age=86400; Path=/
Set-Cookie: _ptret="IjEi:1Xzak8:vwpCkaqCLlAqeVVuuxj23r5g2KE"; Path=/
Vary: Accept-Language
x-content-type-options: nosniff
X-Content-Type-Options: nosniff
x-xss-protection: 1; mode=block
Connection: Close


El enlace es válido.