Kathi Thimsen's picture

by Kathi Thimsen RN, MSN, WOCN

Why do we have the FDA

In the late 1800s the government saw the potential danger that “snake oil” salesmen posed to society. Potions and elixirs were said to calm women prone to hysteria during the pre-menstrual cycle or cure headaches. Some of the most dangerous elixirs claimed to calm colicky babies and irritable children. These potions and elixirs were formulated with water, alcohol, and in some cases, poisons like toxic herbal extracts and tar.

Kestrel Editors's picture

Click-through rate or CTR is a way of measuring the success of an online advertising campaign. A CTR is obtained by dividing the "number of users who clicked on an ad" on a web page by the "number of times the ad was delivered" (impressions).