After reviewing the ToS of AdSense I now have two questions. What if my AdSense ad (used in the Text widget editor in Wordpress) touches another thing I have in the widget like Facebook Like/Fan page or something else? Or should I ad a text widget with a "space" so they separate fuller? Also, I am still doing modifications to my website, if I refresh say 20 times, will that be lke CPM fraud?
I suggest you separate the ad units with other elements on your blog, just to be on the safe side. Also, Google does not mind much if you refresh a few times when adding content, but I recommend you be careful about it... Cheers!
Nope. There aren't really any restrictions on viewing your own ads again and again as long as you refrain from clicking.