Should i authorize "127.0.0.1" in adsense? It's showing as unauthorize site? What is this? Why this showing?
127.0.0.1 is your or anyone localhost. for example if some one creates blank html file in his computer and put your Ad code on that page and run, then ads would appear, and there will be high chance of invalid clicks and impressions. you should not authorize the 127.0.0.1.