Yes there are, if the one who leaving the negative feedback is just an average user, especially to highly reputable service/service who have campaign. Because you know, it would be a threat to both the campaign managers and campaign participants.
If the average user is not on DT1 or DT2 their feedback does not count for much and is not a threat to either a manager or participants of a campaign. What comes under scrutiny is DT members leaving feed-back in a way most consider to be wrong and as I said it is usually about a particular incident and not the concept of preemptive feed-back.
- Jay -