Which of the Following Is One of the Downsides of Blogging

Which of the following is one of the downsides of blogging?

A) Bloggers can expose design flaws in products and cause losses of millions of dollars to the firms.
B) Comment threads do not allow the posting of comments anonymously, and this gives rise to privacy concerns.
C) Blog features are complicated and novice users struggle to use the advantages of blogs to the fullest extent.
D) Bogus "praise posts" can be posted by corporate employees to talk up their firms.
E) Blog posts are difficult to keep track of due to a lack of an organized tagging scheme and searchability features.