This is all anecdotal - its clear that online advertising has a lot of value - ebay is a huge brand, and removing advertising for "shoes" might not be easily me

This is all anecdotal - its clear that online advertising has a lot of value - ebay is a huge brand, and removing advertising for "shoes" might not be easily measureable - however, there are tons of business relying solely on this form of advertising - no one would find their websites if they didn't.