Sixteen terms, each with a definition in the first two sentences, a real example, and links to the neighbouring terms rather than a restatement of them.
Several of them exist because the industry uses them loosely — review gating, first-party reviews and testimonial versus review are all worth getting right.
Start with what a review widget is if the whole category is new. Beyond that: the industry uses several of these terms loosely, and the looseness causes real mistakes — businesses that think filtering changes their rating, or that a testimonial and a review are the same thing, or that gating means one specific practice when it is used for two.
Each entry is deliberately short. If a term needs more than 400 words it has a reference page instead.
Definitions are in the first two sentences of each page, with neighbouring terms linked rather than restated.
