Or just wake up randomly with your knee sprained so badly it will not bend (for no reason at all) forcing you to alter your gait and walk like a geriatric paraplegic
It does, yes. This will prevent your content from being indexed, in most cases. The benefit is that your servers will be up. If your servers are down, they can't be indexed either
This is true. For that I just browse anonymously with an ad blocker