Google Notebook blacklist?

Back on December 20, I wrote about my frustration with Google Notebook, which I use every day as a way to archive much of what I read online (description of this here). For some off reason, it seemed like Google Notebook was down, and yet I could find no other description of the issue online, which made me think I must be mad.

When I came back to my email after my Christmas holiday, one of the emails waiting for me was from Google, and appears below. I replied to them and asked a few follow up questions, and they were kind enough to write back, so I am posting their clarification, as well. I know I am a heavy Notebook user, but I was surprised to have it cut off like that. My thanks to the Google Notebook team for restoring me to the white list, and for this handy utility, which I find invaluable.

Date: Wed, 02 Jan 2008 15:33:09 -0800

From: notebook-support@google.com

To: xxx@xxx.xxx

Subject: [#xxx] accidentally blacklisted account

Hi,

I work for the Google Notebook team, and it's recently come t
our attention that your account was accidentally blacklisted from
Google Notebook. If you've experienced difficulty using Google Notebook
recently, we sincerely apologize for the inconvenience. We've corrected
the problem, and you should now be able to access your notebooks.

Please let us know if you experience any difficulty, and we'd be happy
to investigate.

Thanks again for your patience!

Regards,

xxx

The Google Team

Date: Mon, 07 Jan 2008 14:22:01 -0800

From: notebook-support@google.com

To: "xxx" xxx@xxx.xxx

Subject: Re: [#xxx] accidentally blacklisted account

Hi Ran,

Thanks for your reply. Your account was accidentally blacklisted
by a blacklisting heuristic that looked at total size of notebook information.

We've revised the heuristic, so you shouldn't be accidentally blacklisted
again in the future.

Thanks again for your understanding.

Regards,

The Google Team