This being said, I have no idea what could be done, if anything, to avoid being in a situation where Google can, mistakenly, blacklist your from the Internet.
This is why I stopped using Chrome, and learned to love Firefox, again.
Firefox uses Google for safe browsing filtering.
Heck, if you are looking at this from a larger social good perspective, it might even be better for society at large to have the blacklist provider be much more aggressive about blacklisting sites quickly. What's the cost of a malware compromising someone's machine, and requiring someone to take their desktop off-line for a day or more while they reinstall everything from scratch (and find out that they no longer can find their MS Office reinstall disks, and the new MS Office requires them to relearn where all controls are on the reorganized toolbar)? Versus the economic cost of some minor web site getting blocked for a few days?
In any case, given that you as the minor web site won't be providing any payments to the blacklist provider, why do you assume the incentive structure will be any better with third-party blacklists?
Since the browser maker will no longer control the blacklist, they will now have users telling them that sites are broken (because they've been blacklisted), and they won't be able to do anything about it on the blacklist side. So, what they will be incentivized to do, is to make whitelisting a blacklisted site (especially those that only get loaded through invisible iframes etc.) have a much simpler/easier/clearer UX, so that their complaints go down. This is good for everyone, but it's not something they'll do when they still have the option "just remove X from the blacklist."
It might be a bad assumption that users will demand a more liberal blacklist. That's certainly not how e-mail blacklists have worked out. Sometimes the people most in favor of the blacklists that hit all sorts of innocent mail senders are the users sick and tired of spam.
malware.testing.google.test/testing/malware/
Maybe we just need a a Kickstarter to pay for the engineering time required to get this coded into Firefox and Chromium. If Mozilla or Google don't like it, call the result a fork and start a campaign for people to switch, as happened with OpenOffice+LibreOffice, or with MariaDB. Of course, I think both Google and Mozilla are smart enough that they'd see what was happening there, and just adopt the open blacklists.
As browser-users, I believe that we really do have the ability to affect the decisions of these companies, if we have something we can all get behind. :)
(...at least, if it doesn't directly interfere with their bottom line, like including an ad-blocker in Chrome would for Google. Can't have everything.)
"Probably both sites were infected at some point. Again, I never saw the malware message myself but the guy that alerted us first copied the message he got and it was explicitly mentioning the demo site: “Content from demos.shapingrain.com, a known malware distributor, has been inserted into this web page. Visiting this page now is very likely to infect your Mac with malware.”"