Microblogging Behavior on Sina Weibo and Twitter Weibo Welb posted 54.966.2 another platform Table 1. Number of posts published via Fig. 1. Number of distinct access clients for individual users 4.1 Analysis of Access Behavior Results We first analyzed the most popular client applications that people use to publish posts on Sina Weibo and twitter. On both platforms, the Web interface is the most popular way to access the microblogging services: 43. 1% of the posts are published via the Web on Sina Weibo and 38.5% on Twitter. Other popular clients on Sina Weibo are mainly designed for mobile devices such as the iPhone(7.6%)and Nokia devices(9.4%). Among the most popular Twitter lients are many desktop-based applications such as Tweet Deck, via which 10.7% of the posts are published. Moreover, we observe on both platforms that people publish posts that are rather byproducts of activities the users perform on other platforms. For example, 1.3% of the posts in our Twitter dataset are published user's Twitter timeline whenever she publishes a new blog artice cements on a ia Twitterfeed, an application that allows for publishing annour In Table 1, we overview the type of client applications that people use to publish microblog posts. We therefore manually categorized the 50 most popular clients, that generate more than 90% of the posts on both microblogging services We observe that the fraction of posts that are published via mobile devices is significantly higher on Sina Weibo(45.1%)in comparison to Twitter (33.8%) Furthermore, we discover that the fraction of posts which are rather byproducts of other Web activities of the users -hence where the intent of the actual user activity was not targeted towards Sina Weibo or twitter- is almost three times higher on Sina Weibo(9.4%)than on Twitter (3. 3%) In Fig. 1, we plot for each of the sample users the number of distinct ap- plications which they utilize for publishing microposts. We see that on Twitter more than 95% of the people use more than one client application while on Sina Weibo around 65% of the users switch between different clients Findings From the results above, we conclude the analysis of access behavior with two main findings, referring to the research questions RQI and RQ2 F1: On both platforms, the major way to accessing the microblogging ser- vices is via the official Web interfaces or desktop-based applications. Chinese users seem to differ from the English-spoken Twitter users regarding two core aspects:(i) they use mobile applications more extensively and (ii) publish microposts more often as a byproduct of their other Social Web activities Shttp://ictclas.org/Microblogging Behavior on Sina Weibo and Twitter 5 type of access fraction of posts Weibo Twitter posted on a Web or 54.9 66.2 desktop application posted on a mobile 45.1 33.8 application primary product of 90.6 96.7 microblogging activity byproduct of an activity 9.4 3.3 on another platform Table 1. Number of posts published via different categories of access clients 0% 20% 40% 60% 80% 100% users 1 10 100 number of distinct clients Weibo Twitter Fig. 1. Number of distinct access clients for individual users 4.1 Analysis of Access Behavior Results We first analyzed the most popular client applications that people use to publish posts on Sina Weibo and Twitter. On both platforms, the Web interface is the most popular way to access the microblogging services: 43.1% of the posts are published via the Web on Sina Weibo and 38.5% on Twitter. Other popular clients on Sina Weibo are mainly designed for mobile devices such as the iPhone (7.6%) and Nokia devices (9.4%). Among the most popular Twitter clients are many desktop-based applications such as TweetDeck, via which 10.7% of the posts are published. Moreover, we observe on both platforms that people publish posts that are rather byproducts of activities the users perform on other platforms. For example, 1.3% of the posts in our Twitter dataset are published via Twitterfeed, an application that allows for publishing announcements on a user’s Twitter timeline whenever she publishes a new blog article. In Table 1, we overview the type of client applications that people use to publish microblog posts. We therefore manually categorized the 50 most popular clients, that generate more than 90% of the posts on both microblogging services. We observe that the fraction of posts that are published via mobile devices is significantly higher on Sina Weibo (45.1%) in comparison to Twitter (33.8%). Furthermore, we discover that the fraction of posts which are rather byproducts of other Web activities of the users – hence where the intent of the actual user activity was not targeted towards Sina Weibo or Twitter – is almost three times higher on Sina Weibo (9.4%) than on Twitter (3.3%). In Fig. 1, we plot for each of the sample users the number of distinct ap￾plications which they utilize for publishing microposts. We see that on Twitter more than 95% of the people use more than one client application while on Sina Weibo around 65% of the users switch between different clients. Findings From the results above, we conclude the analysis of access behavior with two main findings, referring to the research questions RQ1 and RQ2 : – F1: On both platforms, the major way to accessing the microblogging ser￾vices is via the official Web interfaces or desktop-based applications. Chinese users seem to differ from the English-spoken Twitter users regarding two core aspects: (i) they use mobile applications more extensively and (ii) publish microposts more often as a byproduct of their other Social Web activities. 5 http://ictclas.org/