This study aims to examine online students' informal information seeking behavior during their learning process and online learning environments to support their informal information needs. The participants of the study were 29 online students in the Professional Development Studies of Rutgers University. Data was collected by the questionnaire and was analyzed with content analysis and descriptive statistics. This study focuses on when and why online students need human interaction to solve their learning problems and how they communicate with others to meet their informal information needs. Moreover, how online students think about their personal communication opportunities and the functions of their online learning system to support their learning problems is also examined. Finally, online students suggest the ways to effectively support personal communication needed during learning process in online learning systems. Based on the findings of this study, a few considerations are suggested in conclusions.