Traditional marketing is based on the broadcast, or push model. Marketers send out the same message through various different channels: TV, direct mail, billboards, and of course, in-store advertising such as sign boards, posters, etc.
The attached graphic illustrates the value of messages that are pulled by the consumer rather than pushed out by the marketer.
Verbela is based on pull messaging: information-on-demand, not advertising messaging as intrusive and distracting noise.