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venuma - 1:36 am on Jan 5, 2006 (gmt 0)
Search : impressions on search results pages generated by Google and by Google Network search partners.(Includes AOL, Earthlink, Ask etc) Content: impressions on content sites in the Google Network. On these sites, your ads are displayed alongside content relevant to your keywords. ParkedPages: Impression on Parked pages. Each Type should have their own maximum bid and the advertisers can choose to opt out of any these categories.
The easiest way for google to handle this situation would be have 3 categories (Currently they just have 2).