I created a web tabs in salesforce but when i give the website name as www.google.com it is not showing anything and if i an using https://www.wikipedia.org it works. Can anyone tell why this so and how to deal with this issue?

Hi,

I have created a domain but it is showing default domain name as "bisp12-developer-edition.na15.force.com". Now i want to change it to let's say "mydomainname.com".  So is it possible to change the domain name. If yes then how?

Thanks