In our study, we attempted to further investigate how Web 2.0 technologies influence workplace learning. Our particular interest was on using Wiki as a tool for corporate exchange of knowledge with the focus on informal learning. In this study, we collaborated with a multinational software development company that uses Wiki as a corporate tool since 2001. For our research, we used three different sources for acquisition of data. Primarily, we did an interview with top management. Next we acquired the data on usage statistics from the company Wiki. And finally we distributed a questionnaire in order to acquire users' feedback. Analysis provided many interesting results. One of the main conclusions is that Wiki is successfully used in this company, and large majority of employees finds it useful. Additionally, Wiki did aid informal learning, but there is still plenty of room for improvement. (Contains 3 figures and 9 tables.)