During my bounty hunters career I have promoted variety of projects that ran airdrops, but I just realized that I have never participated in any that I saw in Twitter, nor had any interest in participating or clicked on retweeted link. The reasons might be various why I did that, but there are two main of them: 1) number of participants. I can only imagine how huge is the network of retweets of original tweet and number of participants that came outside Twitter 2) there are so many of them, that participating and chance of getting rewarded is really low.