Hi! I'm building a Peer-to-Peer Ad Network called Bitfari (https://www.bitfari.org) where users can buy adspace at a dynamic price that is adjusted to foot traffic and historic performance as recorded by the blockchain. This will allow users to bypass agencies, newspapers and other middlemen to gain ad space that's 90% cheaper. The system can handle any HTML ad and any type of digital screen. I am also working in launching a variant for online ads (similar to Adwords).
Companies can nominate any Bitcoin account as a marketing treasury and, when this account changes (either up or down) by a certain threshold, the system can start a campaing in the area of interest. Since users of the platform will be anonymous, there is greater privacy and since advertising costs are lower discounts and promos could be greater.