This paper explores whether instances of code-switching in collected Computer Mediated Communication (CMC) are similar to code-switching in spoken language in terms of spontaneity, motivation and discourse functions. The study is based on earlier code-switching studies (Gumperz (1982); Myers-Scotton (1992)), which indicate that code-switching in spoken language can be “conscious and deliberate” when it is inspired by multiple factors. The examined CMC data stem from Kenyan University students and come in the form of messages from various CMC genres including SMS text messages, e-mail, Instant Messages and Social Network Sites such as Facebook and YouTube. The languages focused upon are Swahili, English and vernacular languages spoken in Kenya. The results propose that although code-switching in CMC is to some degree comparable to spoken code-switching in terms of language manifestation and deliberateness, its discourse functions disclose features that are particular to CMC contexts. The study decides that code-switching in CMC should be considered and handled as a singular and separate entity from spoken-code-switching in order to grasp its intrinsic properties.