1. Can someone tell me if I have to create a new ad type for each site if the site is the same, just that it's on a completely different host, or could I just copy and paste the original code from the first site and just add that to the rest of the sites?

2. I would appreciate it if someone could also tell me if that would be spamming...I have hundreds of sites on different free hosts and I wanted to put an ad on each of those sites..

The sites would be like: site1.freehost1.com -- site2.freehost2.com etc..

Thanks for the help!

either;

you can put the same ad format on every page/site or you can change the ad format to suit the layout of each page/site.

I would not copy and paste the original code from the first site. I have several sites and each time I go back to Adsense to add it as a different Url Channel. That way you keep track of all your sites to see who is clicking where.

Thanks to both of you guys!