Excellent points. I really like your reinterpretation as "a zero price tag is...subsidized with something else...The cost is lock-in." It is definitely more accurate with respect to Google Inc. Though to my ears it sounds like a more generalized version of "if you are not paying for it, you are the product." But don't we almost always think of Google when quoting this line anyway?

Android has bad IMAP support -- is this a limitation of Android, or of IMAP? (are there push notifications for iOS?) IMAP has been a thorn in my side for ever, but I assumed that was the fault of an old outdated protocol?