The institute has a focus on Indonesia and Southeast Asia, but you will also find some research on African countries (e.g. Cape Verde, Sao Tome or Cameroon). The site offers broad information on teaching and research at the institute, as well as on publications, some fulltexts and more. [editors ilissAfrica]
According to his own statement, the author of this Twitter account lists "African Twitter users". As also non-African users are listed, what (also) counts seems to be the "African content" of the Tweets.