Big Publishers, DIfferent Adsense?

Key word lists and matching, infinite ad variety

[Content_ed]

I was just visiting a large website, PageRank 8 for whatever difference that makes, and I didn't understand the formatting of a Google Adsense block containing six ads. So I took a look at the code (first time I've done this ever) and saw it was rather free-form javascript, with lots of options I'd never heard of, including: google_kw_type = 'broad'; and google_kw = ' (list of key words) ';

Did Adsense roll out a bunch of options I missed that we should be using, or do they just have different levels of customization available for their big publishers?

[jimbeetle]

Yep, premium publishers get extra goodies to play around with. I believe that at a minimum you need 20 million impressions per month, though that by itself is not the only criteria G goes by.