| http://www.w3.org/ns/prov#value | - They must load fast, should not impose an unreasonable load in system resources (such as is the case with Javascript-laden ads, heavy images, Flash or other plugins, etc.), should not be annoying, should be appropriate, and should be far more respectful of end-user privacy; and all of this, while representing solidly the message the advertiser wants to be delivered.
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