Check out these blogs. Can you identify different blog types according to the author and audience?
Blog 1 The 005 Blog
Blog 2 CTJ Online
Blogging for ELT by Graham Stanley
"Online exchanges allow students the opportunity for target language practice in situations where such practice might otherwise be difficult. This is especially important in foreign language instruction where students might have few other opportunities for authentic target language use. ... The most effective exchange projects are ones that are well-integrated into the course goals and are based on purposeful investigation rather than just electronic chat (Warschauer, 1999). Such projects might involve joint exploration of culture, social conditions, film, or literature and often result in some kind of collaborative publication " Warschauer,M. and Meskill, C (2000)