Consumers increasingly rely on the Internet to obtain product information and advice from other consumers. However, since the information available on the Internet is easily manipulated, they have to seek cues for the trustworthiness of the online information. The present study proposes and tests the effects on perceived trust of online information and subsequent attitude of (1) perceived strong vs. weak social relationships among net pals and (2) positive vs. negative messages. The moderating effects of credence vs. experience goods are also examined in the research. Results show that, for experience goods, either positive or negative online messages will be perceived as credible as long as the messages are posted by those perceived to have close social relationships. On the other hand, for credence goods, negative online messages are perceived to be more credible than positive online messages when the messages are posted by those perceived to have close social relationships. Results also show the main effect of positive/negative messages on credibility of information, as well as that the effect of credibility of information on product attitude is weaker in the credence goods group than in the experience goods group. (C) 2010 Direct Marketing Educational Foundation, Inc. Published by Elsevier Inc. All rights reserved.