A study that analysed two million tweets has found images in a tweet increases chances of its re-tweet more than four times.
The study by digital marketing agency Stone Temple Consulting from Framington, Massachusetts, found that using images, hashtags and links in a tweet had an even greater impact on engaging other users than it was thought.
Tweets with media were re-tweeted 68% of the time compared to 30% of text-only tweets.
Also, 74% of tweets with media were favourited while for text-only tweets the figure was 38%.
Tweets with hashtags got re-tweeted 49% of the time, while 32% was the figure for those without the hashtags.
One surprising result of the analysis was that the time of day was found to have a very little effect on chances of being re-tweeted, the percentage of getting re-tweeted varied only 35 to 37% over a 24-hour period.
Embedding a link in tweets was found to have an impact too - there was a 10% hike in chances of being re-tweeted, up from 33% of tweets without links.