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Abstract--- In this paper we present a web-based Augmented Reality (AR) meeting support system aiming at improving communication in a co-located (face-to-face) meeting. We have developed a prototype system, Meetsu, which consists of a web system that displays questions and comments submitted by meeting participants as AR annotations on top of a live video feed. The AR view allows for an easy visualization of the overall impression of the audience which impacts on the participants ’ predisposition to communicate. We have conducted a user study to measure the change in the levels of Willingness to Communicate (WTC) before and after the use of the system with two different meeting groups. The system was presented in two versions, an AR and a Non-AR version, and the perceived effect on the meeting was investigated. Results showed an improvement on the WTC scores for both groups with statistical significance (p<0.05) being achieved by one group. The AR version was considered to make the participants more willing to communicate and more engaged in real-world conversation