[ ] I have read the privacy statement and consent to bla-bla-bla … [ ] I have read the terms and conditions and agree to bla-bla-bla donate my firstborn's l

[ ] I have read the privacy statement and consent to bla-bla-bla … [ ] I have read the terms and conditions and agree to bla-bla-bla donate my firstborn's left kidney … [ ] I want you to spam me with information about updates I don't care about bla-bla-bla … At this point of many a registration form I am already in stop-wasting-my-time-just-let-me-in/send-me-the-stuff-I-bought/book-that-room mode. Not ticking that last box takes a non-negligible amount of focus right after I've finished filling a form with actual relevant information related to the service. I imagine many not-so-technical users will just check all the boxes automatically. You can easily verify this by placing that third opt-in somewhere else on the form well away from the must-read opt-ins for stuff no one reads, and giving it a different styling more in line with its message (like the buttons suggested by jeroenhd). I'll bet the numbers of opt-in subscribers will drop significantly.