Business advertising

The quality of a lead has been debated for years and will continue to be debated for the foreseeable future.
Why?
Because there is no standard definition for a quality lead. Advertisers and marketers typically try to define lead quality by asking questions like: Is a quality lead defined by conversion based on time? Is it based on Return on Investment (ROI)? These questions will continue to go unanswered because different businesses have different benchmarks when considering lead quality.
Another prominent question is: Does lead quality diminish over time because of over-exposure?
Again, there is no definitive answer, but I believe lead quality diminishes over time for 2 reasons: because most advertisers don’t “refresh” or “re-adjust” the ad; and because consumers become desensitized to the ad content due to over-exposure.
How can this problem be addressed?
I believe lead quality can be improved by changing the advertising message consistently. If the message is changed 4 times a year, it will stay fresh. Very few ad campaigns can run forever without change. For every “Just Do It “and “Priceless”— campaigns that have been continuously refreshed and re-adjusted—there is a “Where’s The Beef?” or a “Pizza!, Pizza!” –branding phrases that were extremely popular, but have fallen by the wayside because they were not updated.