I found an article about GMail's increase in the number of people you can invite: Google's GMail Goes Global. Nothing groundbreaking in it, either. I'm still looking for analysis of what this might mean. Doing that on my 5 minute breaks of working on my dissertation. It is getting there. I'm in chapter 6 out of 8! (yes, well, most of the changes happened in chapters 6 and 7 anyway... but that's a minor detail!)