When we apply for Adsense and created the site and put Adsense code and get approved for it (Ad Unit active), can we put that same code in another website and expect it to be working? Because I tried that and no ads are displayed on the second site. Thank you.
I guess it should work, I never tried though. I am using blogger alone. There is one option in adsense, where you need to set the option to "allow all domains to display my ads". It should help you.
Yes! you just have to get approved by Adsense once, after that you can use the same adsense code in all your websites. If the code is not working on other website, visit the adsense blog: http://adsense.blogspot.com or adsense forum: http://www.google.com/support/forum/p/AdSense to get some answer there.