Q: My company runs contests and sweepstakes in social media. To enter, participants have to send a Tweet or make a pin with the hashtag, #XYZ_Rocks. (“XYZ” is the name of my product.) Isn’t that enough to notify readers that the posts were incentivized?
A: No, it is likely that many readers would not understand such a hashtag to mean that those posts were made as part of a contest or that the people doing the posting had received something of value (in this case, a chance to win the contest prize). Making the word “contest” or “sweepstakes” part of the hashtag should be enough. However, the word “sweeps” probably isn’t, because it is likely that many people would not understand what that means.