Didymo is a member of the group of single-celled aquatic plants (freshwater algae) known as diatoms. Although it is microscopic, didymo can form dense colonies called algal blooms which can be seen with the naked eye.
From a marketing perspective, publicity is one component of promotion which is one component of marketing. The other elements of the promotional mix are advertising, sales promotion, direct marketing and personal selling. Examples of promotional tactics include: 1  Announce an appointment.
One Definition of Promotion. Promotion keeps the product in the minds of the customer and helps stimulate demand for the product. Promotion involves ongoing advertising and publicity (mention in the press). The ongoing activities of advertising, sales and public relations are often considered aspects of promotions.