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Using a longitudinal, systematic random sample of 490 postings, this study analyzed the type of social support provided, the strategies used to solicit social support, and the themes on the top 5 Yahoo! eating disorder discussion boards. Optimal match theory was used as the theoretical framework for the study. Results suggest that messages providing informational support were more prevalent than those providing instrumental support. Also, the findings revealed that the most frequent strategy for soliciting support was sharing experiences and the most frequent theme was positive affect. The results of the study highlight the significance of prosocial communication exchanges on these discussion boards.
Kristen Campbell Eichhorn (2008) studied this question.