Twitter begin testing syndication of Promoted Tweets in user timelines with "HootSuite."
"During this testing period with HootSuite, we'll experiment with where and when Promoted Tweets are shown in the timeline. Not all HootSuite users will see Promoted Tweets and those who do may see different Promoted Tweets in different places in their timeline. As with Promoted Tweets in search, we'll display Promoted Tweets in the timeline when they're relevant. Similar to our Promoted Account recommendations, we use several signals to determine a Promoted Tweet's relevance to a user, including the public list of whom they follow. We'll expand the rollout only when we feel we're delivering a high-quality user experience," explained Twitter.
This next phase will bring Promoted Tweets to a wider audience and help even more people discover interesting accounts, people and information they may otherwise have missed.