It's starting to get silly. That's why people are angry.
I'll give you a personal example. If you do not have a Google+ account, but you have a Google account and GMail: You'll get annoying messages with "WHATS UP IN G+ DAWG" periodically and randomly.
But surely, you can unsubscribe? It's a bit obnoxious to opt-out, but hey, right? Nope! You need to "Log on Google+ to change your notification settings".
I'll give you a personal example. If you do not have a Google+ account, but you have a Google account and GMail: You'll get annoying messages with "WHATS UP IN G+ DAWG" periodically and randomly.
But surely, you can unsubscribe? It's a bit obnoxious to opt-out, but hey, right? Nope! You need to "Log on Google+ to change your notification settings".