The phrase "best advertising" refers to the most effective and successful way to promote a product or service, which generates the most attention, interest, and sales. Full definition
However, I can argue that tens of thousands of giveaways of one of my very best books can only be good advertising for my others, once people get around to reading it. (russellblake.com)
On top of that, dating apps don't always make good advertising platforms. (onlinepersonalswatch.com)
A 0 % interest rate is not always well advertised by a card issuer. (valuepenguin.com)