Twitter has sold user information to two advertising brokers who will resell its data packages.
Data offered by Twitter include basic information about users and all the messages published in the last two years, writes Montreal Gazette.
Twitter has signed contracts with two companies: DataSift, which covers the UK and the U.S., will have access to data packages that include recent tweets and Gnip, an American company that will sell information aggregated by Twitter in the last month.
Even if the information sold by Twitter is anonymous, the companies that bought them will be able to analyze depending on the location of those who have published them in order to develop more effective marketing strategies.
Advertising brokers will not have access to personal or deleted messages.
Users can delete the published information any time and the databases are updated regularly in order to not keep the tweets deleted by those who published them.