I disagree completely with that last 'con' (only converge on popular topics)...people blog about what their interests are, whether popular or not. Yes, sometimes things happen that everyone will post/write about (e.g. diversity in academia, career advice for young scis, whatever). But most bloggers write about their own little obscure things more often than not. Popular blogs may cover only more popular things, but that's a little different.
Oct 30, 2014
Something is wrong on the Internet! What does the Science Blogger do?