Can I search in the web with Google Custom Search? Because in http://www.google.com/cse, I must enter a site url in "Sites to search"; And I don't have any url! because the Internet doesn't have any URL! (I think!)
Can you help me?
I believe you have to enter a url because google wants to know what website(s) the search form is going to be on. But after that, when your custom search is set up, you can go into its settings and make different changes. The best you can do for searching the entire web is to click this option in the "Basics" section of your Custom Search Engine:
"Search the entire web but emphasize included sites."
Hope that helps.