In most cases, click through rates are a better indication of effectiveness, and studies have shown that Twitter Ads have higher average click-through rates than other ad channels. Promoted Tweets have shown average engagement rates of 1 to 3 percent, which is much higher than the average for traditional banner ads.
Are Twitter ads effective?
According to AdWeek, “engagement rates” for Twitter ads can be as high as 1-3%, much higher than Facebook's average CTR of 0.119%. ... Twitter claims that Promoted Trends provide a 22% lift in brand conversion, 30% lift in positive mentions and 32% lift in retweets.
Is it worth it to promote a tweet?
Promoted Tweets are ideal when you want to increase your Twitter audience reach and engagement. When you have a big announcement, a new blog post, a marketing campaign, or an upcoming event you'd like to reach more people than you would organically, Promoted Tweets is the better strategy.