europeforvisitors - 6:19 pm on Jan 18, 2005 (gmt 0)

There may be ad campaigns in the future which the advertiser insists are run only on pre-vetted sites.

That may well occur, but status as a premium partner wouldn't necessarily come into play. Indeed, if you visit the AdWords forum, you'll see complaints from time to time about premium-partner traffic that sucks up advertisers' budgets without converting (which stands to reason, since most sites that generate 20,000,000 or more page views per day are portal sites, weather sites, map sites, etc. that aren't targeted to specific audiences and have a lot of waste circulation for the advertiser's topic).