Method and system for placement and pricing of internet-based advertisements or services

Presented are embodiments of methods and systems that provide for Internet advertisement pricing and placement to be variably based on the advertisement's performance within a given category of Internet media, while at the same time achieving predictable delivery and pricing for both advertisers and publishers. Techniques are presented where an advertiser's online campaign will be pre-empted only for underperformance on its own merits, and not for its relative performance or price versus other advertisers. Further, techniques are presented for allowing publishers of advertisements to realize increased revenue from their high value media while using tag passbacks to secure a minimum reserve pricing of their choice.