We know sometimes, when you do something on Google, Google wants to verify you are a human and not a robot. So they serve up a captcha for you to prove you are someone typing with real fingers.
I often see people complaining about that in the forums but the truth is, it is rare for a user to stumble upon the Sorry screen in normal daily Google activities.
Did you know that you can access this captcha directly, without fail, by going to sorry.google.com?
I am not sure when that became available? But it is available now.
I also don't see much discussion around this subdomain name in Google. So it isn't a big deal, although everything with Google is a big deal - or it is fairly new.
Here is a picture of what it looks like:
I spotted this on Hacker News.