The document analyzes differences between tweets from company accounts and personal accounts that one user follows. It finds that company accounts tweet much more often, with their tweets making up around 80% of tweets in the user's timeline even though they only represent around 46% of followed accounts. Company tweets also tend to receive more engagement in the form of favorites and retweets. In contrast, personal accounts interact with each other more by mentioning each other in tweets. Finally, company tweets are much more likely to include a URL, with around 95% doing so compared to a lower rate for personal accounts.