From boing boingGoogle Accelerator is bad news for Web apps

Google Accelerator wreaks havoc on Web-apps by "clicking every link" on
every control screen in order to cache it -- so it also ends up
clicking on "Delete my account" and "Launch pre-emptive nuclear
strike," etc.

The accelerator scours a page and prefetches the
content behind each link. This gives the illusion of pages loading
faster (since they've already been pre-loaded behind the scenes).
Here's the problem: Google is essentially clicking every link on the
page -- including links like "delete this" or "cancel that." And to
make matters worse, Google ignores the Javascript confirmations. So, if
you have a "Are you sure you want to delete this?" Javascript
confirmation behind that "delete" link, Google ignores it and performs
the action anyway.

There's some foo you can add to your Web-app designs
to prevent this, but if you haven't patched and your users are using
the accelerator, look out!
Link

(Thanks, Jason!)