the breadth of subjects can be wide, as well as the depth of those using the platforms. Users of these platforms seem to feel obligated to share simple information as was listed by Pennington, but also highly personal information that can now be considered general knowledge. Because of social media platforms and users' willingness to share personal information, the law of reciprocity is replaced by divulging personal information to countless followers and friends without them reciprocating the same level of vulnerability. In cases like this, there is depth without much breadth. Barriers Several factors can affect the amount of self-disclosure between partners: gender, race, religion, personality, social status, and ethnic background. For example, American friends tend to discuss intimate topics with each other, whereas Japanese friends are more likely to discuss superficial topics. One might feel less inclined to disclose personal information if doing so would violate their religious beliefs. Being part of a religious minority can also influence how much one feels comfortable in disclosing personal information. In romantic relationships, women are more likely to self-disclose than their male counterparts. Men often refrain from expressing deep emotions out of fear of social stigma. Such barriers can slow the rate of self-disclosure and even prevent relationships from forming. In theory, the more dissimilar two people are, the more difficult or unlikely self-disclosure becomes. Stranger-on-the-train phenomenon Most of the time individuals engage in self-disclosure strategically, carefully evaluating what to disclose and what to be reserved, since disclosing too much in the early stage of relationship is generally considered inappropriate, and can end or damage a relationship. In certain contexts, self-disclosure does not follow the pattern. This exception is known as the "stranger-on-the-train" phenomenon, in which individuals rapidly reveal personal information with complete strangers in public spaces. This specific concept can be known as verbal leakage, which is defined by Floyd as "unintentionally telling another person something about yourself". SPT operates under the impression that the self-disclosure given is not only truthful, meaning the speaker believes what is being said to be true, but intentional. Self-disclosure can be defined as "the voluntary sharing of personal history, preferences, attitudes, feelings, values, secrets, etc., with another person". The information given in any relationship, whether acquaintance or a well-established relationship, should be voluntarily shared, otherwise it does not follow the laws of reciprocity and is considered verbal leakage, or the stranger-on-the-train phenomenon. Some researchers argue