Real-Time Reviewing

I've started doing real-time reviews over the last year. i.e. reviewing Collections or Anthologies as I proceeded through the book in a sort of stream-of-consciousness way.

Do you think this is a valid way to review - showing future trends as provided by the pros (rather than the cons) of the Internet?

My view:
It's not only significant for the author of a book reviewed in this way to receive a possible new audit trail of leitmotifs or a new gestalt proposed by another party, but it is also beneficial, I have found from my experience of doing this, for a reviewer to review books in this way. It opens the 'reading eyes', I suggest, in ways in which they would not otherwise be opened.

I've real-time reviewed a lot of recent single author collections here:
http://weirdmonger.blog-city.com/recent_reviews_of_books_by_dfl.htm