300 Personal Content Experience: Managing Digital Life in the Mobile Age Currently, in many cases, excluding POIs and games, it is only through indirect use of metadata that location information really starts to enhance personal content experience. As the positioning capability will become a more standard feature in many mobile devices in the near future, it is advisable to start providing content-intensive applications with support for location-related metadata and management, such as organization, categorization, and searching. Considering the location stamp a standard fi le property, not unlike fi le creation and last access timestamps are today, is the fi rst step to take. 7.3 Sharing and Communities As pointed out in Chapter 3, sharing is tightly related to personal content experience. The sharing of information can create a commu- nity, that is, people who form a group by sharing the same subject of interest. The relationship between personal content and communities then deserves a closer look. In this text, we focus on virtual communities. There are communities of different sizes. Some only have a few members, while others have millions, some being more active than others. Some are closed – either they do not allow new members at all, or the new member candidates are carefully chosen – and some are more open. Nevertheless, it is about people getting together for a specifi c purpose. 7.3.1 Content Sharing 14 Content sharing sites, such as Flickr for photo sharing, create so-called implicit communities. Anyone can view images in Flickr, but to post images there people have to register – to become part of the sharing community. “I’m in Flickr,” we hear people say, much as if they would say “I live in Nottingham.” Inside this loose community, more tightly knit families are implicitly created between people who comment on each other’s photos. The community is only implicit, though, and the sense of belonging is not a major factor among Flickr users. From the viewpoint of personal content, Flickr can be simply con- sidered an online photo album with convenient uploading and hosting of images, with added functions for presenting, linking, sharing, com- menting, and tagging. The interaction on the page has been stream- lined for these key functions. Single clicks suffi ce to carry out most 14 http://www.fl ickr.com/