TAILIEUCHUNG - Web Application Design Patterns- P11

Web Application Design Patterns- P11: This is the type of book you’ll want to read with your entire team and a fl ip chart because every page will produce a list of actionable changes for the applications you’re developing. Pawan Vora has produced an amazing catalogue of the essential patterns for designing today’s web-based applications. | 286 CHAPTER 9 Social Applications FIGURE Kwanzoo an entertainment trivia site shows top players ranks and points in a leaderboard format. It also shows whether a user moved up or down and by how much. Yahoo Answers shows users how many points they have accumulated and the number of points that they need to get to the next level. CLEARLY INDICATE HOW USERS CAN REACH THE NEXT LEVEL When using reputation levels make it easy for users to determine how they can reach the next level. This keeps them interested and motivated to participate Figure . CONSIDER INCORPORATING PEER RECOMMENDATIONS In the reputation systems discussed so far users indirectly earn a reputation based on the swiftness of transactions quality of the products delivered usefulness of advice and so forth. Many social networking applications on the other hand allow users to establish reputations through testimonials or recommendations that they receive. LinkedIn for example allows users to write recommendations for others. Users who get recommendations receive a thumbs-up icon on their profiles and an indication of how many people have recommended them. Discover Network Members 287 Although it could be argued that peer recommendations are based on past interactions transactions or services provided and there are other similar forms of reputation systems an important difference is that the recommendation action is phrased more directly toward the person rather than the services offered or products sold by him or her that is recommend this person instead of recommend services offered by this person. Related design patterns Both RATINGS and REVIEWS patterns may accompany REPUTATION because gaining reputation requires users to rate and review the transactions or activities they are involved with. DISCOVER NETWORK MEMBERS Problem Users new to a social application may not know how to connect with others with similar interests or with whom they have lost touch. In addition users who are .

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