Adsense Javascript Version Usage

Hello,

While flirting around, and no matter that i know almost all the unleashed google ad triggers, it seems i encountered a new version, code below..
My question is, are these codes only for premium advertisers, or is it available for all? Because the site they ran on, is far far away from being premium.

<script language="JavaScript" src="post_advert_custom_src.js"></script>
<script type="text/javascript"><!--
     google_ad_client = "pub-**************";
     google_ad_channel ="**************";
     google_ad_output = "js";
     google_safe = "high";
     google_max_num_ads = "3";
     google_safe = "high";
     google_hints = "keyword1 keyword2 keyword3 keyword4 etc..";
// -->
</script>
<script language="JavaScript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> </script>

Code (markup):

Thanks in advance.

 

maybe the guy has more sites with more traffic, so he can be a premium publisher. Anyway, dont think this is available to the normal adsense publishers.