There is wide variation in blog structure, from single-author blogs with few links to external sites, few if any comments and infrequent updates, to complex multi-author blogs with extensive linking and tagging, constant updates and voluminous commenting. The majority of blogs analysed by Herring’s group fell on the simple side. A total of 90.8 per cent of the randomly selected blogs they analysed were single-authored, and blogs in their sample were updated on an average of every 2.2 days. The typical blogs