Getting data from Twitter with the twitteR package
Twitter is an unbeatable source of data for nearly every kind of data-driven problem.
If my words are not enough to convince you, and I think they shouldn't be, you can always perform a quick search on Google, for instance, text analytics with Twitter, and read the over 30 million results to be sure.
This should not surprise you, given Google's huge and word-spreaded base of users together with the relative structure and richness of metadata of content on the platform, which makes this social network a place to go when talking about data analysis projects, especially those involving sentiment analysis and customer segmentations.
R comes with a really well-developed package named