Spam refers to unsolicited, irrelevant, or inappropriate messages sent on the internet, typically to a large number of users, for purposes such as advertising, phishing, spreading malware, etc.
In the context of domain investments, spam can be related to various unethical practices. For example, “domain spam” is when someone registers domain names similar to popular ones, hoping to exploit any typographical errors users make when entering the URL, leading them to unwanted sites.