Here are a few examples of their mistakes: 30 items
Biased Editors"openly liberal" writer named Kim Lacapria, who wrote for the FakeNews site the Inquisitr, and has a blogger history of calling Bill Clinton the greatest president ever, and being anti-Bush, anti-Tea party, and anti-Conservative. Many of her articles on Snopes are obviously biased and partisan like: spinning Jimmy Carter's Iranian ban as nothing like Trump's more moderate one. Or implied that when Hillary claimed "we didn't lose a single person (in Libya)", she had only meant in the invasion. Or Omar Mateen wasn't a democrat linked above. Or that Facebook Censorship of conservatives, admitted to by Facebook workers, wasn't real.
But Lacapria is hardly alone in her bias. There seems to be many of her political ilk.
Snopes financial issues
While I'd far rather Snopes was doing the service they did earlier on, and not hiring biased editors to write partisan fact checks, and losing money doing it. They picked their path. And they seem to be suffering the consequences of CNN, NYT and others -- which is alienate half your uses, and you cut down on your revenues. Maybe more true when those users might were the ones with money (or willing to spend it).
I'd hope they'd get back to their purpose (unbiased fact checking, and leaving the fake news to NYT, CNN and WaPo to spin). But I've seen few media companies that could learn from the mistake of being too left, and pull out of their death spiral. Especially then their echo-chamber tells them, it's not their fault.
The point isn't that snopes is untrustworthy, or partisan (they kind of are, but no worse than most). I'm sure with work, I could find dozens more examples showing where they made mistakes the other way. Overall, I think they're fairly objective, most of the time, and most articles are pretty well written and pretty objective and they do a pretty good job of researching facts. There are some blatant exceptions to that, and when they behave badly, they don't always fix things in above board ways that would fit good journalistic standards.
So I use them quite a bit, and don't mind others than do so. But the many fair articles don't make the completely hacky and unfair ones any more legitimate. So skepticism is still required. They're no authority, they have made plenty of mistakes, and have plenty of examples of crap-articles -- and most of those mistakes seem to align in ways that wouldn't be surprising for California-based company, with liberal editors and left-coast contributors.
A little added scrutiny and dubiousness from those center or right of center, is more than warranted. And certainly, those linking to Snopes worst articles, and trying to use "appeal to authority" (or popularity) fallacies are no less wrong for doing so, just because most of Snopes articles aren't complete crap.
Thus as long as someone isn't trying an appeal to authority fallacy, we're fine -- and if they can see or admit the blatant bias in what they are, that's fine too. But if someone links to one of their bad articles and pretends that closes the subject on anything, they deserve the schooling that this article offers.
Worst of all is that as their standards have dropped, their responsibilities and impact have increased. Google, Facebook and others, are using them to filter junk news from the real news, or effect rankings -- and Snopes just doesn't have or deserve the chops for that kind of stuff. While I'm fine with them as a casual fact check site, I'm terrified of them as the thought-police for the Internet. And with the partisan lefties on their staff, I assume they're going to decay over time.