mobile phone to connect with our social network. With further elucidation, the findings we present can offer interesting insights to a number of domains such as the detection of the spread of mobile phone viruses [29], modeling information dissemination in social networks [31], designing recommendation systems [32], and of course, marketing [33]. More importantly, it can add to other studies that can further their investigations and understanding into the effects of weather on our moods, physical self, and even socioeconomic behavior [6][30]. In itself, the case we present can open up new trajectories for research. For one, such high level and interesting correlations (as well as insights) offer researchers justifications for follow up research that are more focused and that dwells more deeply into these observed ‘relationships’. For example, a deeper investigation of why people are more likely to talk longer on mobile phones on colder days but predominantly with those of strong ties, could reveal not only the motivation, the actual relationships but also people’s experiences of the connectivity during these cold days. More interestingly, are there any, and if so, how does this correlate with people’s interactions with other communication technologies and social media? Establishing a more detailed understanding of such questions may inform an understanding of the dynamic rhythms of social bonds, people’s (subconscious) needs and experience of connectedness under particular weather parameters. This could also elucidate the range and roles of the communica- tion technologies involved as well as to what extent they could support people’s sense of well-being. Secondly, this work could enrich and inspire our design of future technologies, especially social technologies. For instance, while context-aware computing is good at sensing our physical and increasingly our social environment, we don’t believe that designers have thought about the need to sense different weather parameters. By adding the awareness of weather parameters and how they shape people’s emotional needs and experience for-and- References 1. Trenberth KE, Miller K, Mearns L, Rhodes S (2002) Effects of Changing Climate on Weather and Human Activities. Sausalito, California: University Corporation for Atmospheric Research. 2. Tucker P, Gilliland J (2007) The effect of season and weather on physical activity: A systematic review. Public Health 121: 909–922. 3. Stathopoulos T, Wu HQ, Zacharias J (2004) Outdoor human comfort in an urban climate. Building and Environment 39: 297–305. 4. Karjalalainen S (2007) Gender differences in thermal comfort and use of thermostats in everyday thermal environments. Building and Environment 42: 1594–1603. 5. 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Berlin, Heidelberg: Springer-Verlag, ECML PKDD’10, pp. 354–369. PLOS ONE | www.plosone.org 12 October 2012 | Volume 7 | Issue 10 | e45745