We Feel is part of the Digital Economy Programme of CSIRO, a federal government agency for scientific research in Australia. In collaboration with the Black Dog Institute and with support of Amazon Web Services and Twitter's GNIP, We Feel accesses tweets using both the public Twitter API, and samples from GNIP. The volume of data is on the order of 19 thousand tweets per minute.
According to the website, We Feel accesses 3 sources for its tweets- the public Twitter API, which it uses for 1% of its data; and a sample from GNIP comprising 10%; and an unidentified third source that monitors the emotional content of Twitters public tweets. Considering the volume of this data, the infrastructural support from Amazon AWS allows We Feel to analyze and parse the data.
We Feel attempts to quantify and visualize the emotional content of tweets in order to understand our emotions and the way we feel. Using the Twitter dataset, the We Feel team also hope to better understand how social and economic factors influence our emotions. All the data it collects is available for download from its website.