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.
Dissemination is a term meaning communication, or a flow of information from a source. Dissemination is an active concept, where the information is tailored and targeted for an intended and identified audience. In contrast, communication which is passive, untailored and untargeted is defined as diffusion.