New sellers should be aware that every year, the competition among most product niches grows. There are more sellers per niche than ever before, so junior sellers may find it harder to launch a successful product than they did only a few years ago. Amazon is also consistently changing its algorithm to better serve customers looking for relevant products, so staying compliant is also a constant challenge. Often, a trick you used to use as a seller may now be against Terms of Service or had the loophole closed—something Amazon is getting quite good at doing. Blackhat sellers are also becoming an increasing problem, employing sneaky tactics that enable them to hijack more listings than in previous years. Many of these threats are originating outside the US, so be careful whom you share product information with, particularly with overseas entities.