In response to the request made by users, Twitter produced a Basque version in 2012 and since then there has been an option to use the Twitter interface in Basque.
UMAP is the website that gathers and filters the activity of Basque-speaking Twitter users. According to it, there were a total of 7,476 active users using Basque last month, in October 2015. As far as the tweets are concerned, these active users in the community sent 394,223 tweets (54.68% in Basque). In other words, an average of 6,953.77 tweets per day are posted in Basque.