Complex sentence: In order to avoid receiving a negative comment, users either don't leave any or leave falsely positive comments to counterparties, which makes the comments an unreliable source of information about the credibility of members.
Split into simpler sentences: In order to avoid receiving a negative comments, users either don't leave any comments or leave falsely positive comments to counterparties. This makes the comments an unreliable source of information about the credibility of members.