I don't think we're on the same page about what 'code review' is. I'm only talking about having your co-workers/peers look at your code and keep up to speed on what's happening to the code base you're all working on.
Do you have a citation for 'most' of the popular web applications not being code reviewed? Have the developers at, say, twitter said they ignore commits and code written by co-workers?
Do you have a citation for 'most' of the popular web applications not being code reviewed? Have the developers at, say, twitter said they ignore commits and code written by co-workers?