In this review, the focus will be on what the author believes are (a) the most broadly important results in of (particulate) tribocharging, (b) the most important issues to the academic community since the last IFPRI review by Matsuyama and Yamamoto in 1998, (c) the intersection of these with the issues most relevant in industry, and (d) the results that the author considers to be the most durable. In contrast to a more typical review format, where a very large number of results are discussed very briefly, this review will go into detailed summary of select results. Section 2 will begin with a succinct summary of essential knowledge to anyone concerned with tribocharging: namely the work-function mechanism for metal-metal contacts as developed primarily by Harper and Lowell. In §3, the focus will be on charging between metals and insulating particles, in particular highlighting the work of Matsuyama and Yamamoto, to illustrate the (at the very least functional) inadequacy of the work-function model for this situation and highlight the importance of dielectric breakdown. Section 4 will switch focus from different material (i.e., metal-insulator) charging to same-material charging—i.e., what occurs between the particles in a particulate system. Here, we will recapitulate the essential results of the groups Lacks and Jaeger, who convincingly showed that charge separation based on size occurs. The focus will then naturally shift in §5 to the patch models for tribocharging, including the “trapped” electron model which can be considered a special case. Finally, §6 will focus on the latest generation of experiments, which repeatedly measure the charge exchange between the same two objects, and which challenge the most basic tenets of the patch-model framework and force us to reconsider the underlying cause of same-material tribocharging. Due to finite time, energy, and space, but also due to the predilections, focus, and expertise of the author, many relevant results worth mentioning will surely be missed. It is the hope, however, that this review will serve as a “good starting point” for anyone in industry who would like to know about the topic’s most durable results, as well as the most cutting edge ones, to be able to think about their particulate charging issues in a more informed way.