Travel industry journalist Dennis Schaal launched a blog (called the Dennis Schaal Blog - online riffs and notes) back in March this year. Since then he as been prolific (149 posts) and very insightful. With Kevin May leaving Travolution (and yet to announce where he has landed) Dennis has rocketed to the top of my best industry blogger list. He has been part of my feedreader for a while and is now added to my Blog Roll. I suggest you add him to the sites you review also.
While you will not hear/read me talking/writing about global OTA Orbitz or online hotel only specialist HotelClub, there are a couple of recent posts by Dennis on those companies that will give you a good introduction to his writing style and insight.
Where in the World is the Orbitz Hotel Business Model?
Does Orbitz Ratestogo.com Mean Merchant Model To Go.com?