Google begins penalising domain leasing
seroundtable.com
seroundtable.com
https://www.google.com/search?q=scrambler+50cc+parts+format%...
Wiring diagrams in Google images - literally every result is webspam in the same format split across squatted domains.
https://www.google.com/search?q=mazda+miata+wiring+diagram+s...
These aren't even particularly niche searches, nor is it hard to detect that all these sites are the same.
You expect that some companies are publishing a parts catalog in PDF format?
The query just seems odds to me, and so the garbage results don't seem too surprising
You could always find a parts catalog, service manual, that sort of thing scanned and posted online. PDF (used to) select for the scanned documents. Used to be my main usage of google was finding service manuals for auto and electronics.
Nowadays the spam just pretends to be a pdf cause we used to always search for them.
It's really common in some areas. This at least used to be a very effective search pattern.
Don't them all? Once you get to niche products, there are even web stores out there that only list their parts in PDF.
Apache Foundation and many others are even in on it. They specifically say they are selling a do-follow link.
Look at the companies at the bottom buying them: https://www.apache.org/foundation/thanks.html
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It's just paid links. Apache isn't the only one doing it, a lot are. I'm glad they are getting money, but it's paid links pretty openly on super highly ranked pages.
> BRONZE
> Donation level: US$6k/year
> Text mention on our ASF Thanks page with 'nofollow' link
> Text mention location: lower section of page
> -> Alphabetical placement
> -> Shared row
> -> “Follow” link with multi-year commitment
> Use of the ASF Bronze Sponsorship logo for your site
> Listed in ASF Quarterly + Annual Reports
That's why FSF's listed sponsors actually care about sponsoring the FSF. The ASF "sponsors" pasted by the first comment and many of the listed EFF "sponsors" aren't donating money because they care about the foundations. They're purchasing links in order to rank higher[1], and a link just happens to require donating.
[1]: EFF uses rel=nofollow on all links to sponsors, so a listing on this page probably doesn't actually do what the buyer intended. Google covers this in https://support.google.com/webmasters/answer/66356?hl=en. In a sense, EFF gets free money from people who think they're buying better ranking but actually aren't. OTOH, ASF's decision to specifically sell rel=follow links - which do pass PageRank - is surprising.
FWIW, though, Google can/does penalise such links. From their list of things that can negatively affect ranking:
> Buying or selling links that pass PageRank. This includes exchanging money for links, or posts that contain links; exchanging goods or services for links; or sending someone a “free” product in exchange for them writing about it and including a link
https://mobile.twitter.com/googlewmc/status/1161725709926182...
They certainly weren't equal but they got more than a little (trust/authority/ranking - call it whatever you want) help from their parent domain.
To the point that this was the case:
If I bought a brand new, never used .com and built 500 pages of spammy content and linked those pages/content from thousands of other super spammy pages... that domain is de-indexed within 2 weeks and the pages never really ranked/got organic traffic worth the cost of the domain name.
If I built those same pages on a subdomain and linked them in the exact same manner but the parent domain was very strong - the pages would rank and traffic would flow steadily, indefinitely. (As long as the parent domains footprint/linking was large enough to absorb whatever penalty that my spammy pages brought).
It's still happening today where people buy up domains that are established with good link profiles - go to archive.org and download the sites old content, re-host it and keep it alive. Then they build spammy subdomains on the parent domain - profit.
I suspect what is more likely is that the subdomains were separate but not completely unrelated/correlated to the primary domain. Google likely assigned a certain amount of value to the mere fact that it came from the core domain. I think that is what changed here.
Long to short, Google just wants to be human [1], but it wants to do that automatically and at scale. It seeks to reflect what a human would approve or reject. If you look at the history of SEO / the search algorithm this is the nature of the progression. Obviously.
These sites aren't being penalized. Hiding in a blindspot and being discovered is not a penalty. It's simply reality; a reckogning; a day that only the naive would believe was not coming.
[1] Actually, Google wants to be you. The attempt to personaling search is Google wanting to recommend to you if you could recommend to you.
There are two halves to the list. The first ("ICANN") half are suffixes that work like a TLD from the perspective of the DNS registry. Nominet handles registration in .co.uk or .org.uk or .net.uk the same way another country might choose to handle their whole TLD.
The rest is names whose registered owners do the same thing as a registry for the public or some subset of them, like Blogger or a cheap bulk hosting site where you don't pay for a name.
PSL listing has a variety of effects. Don't do it hoping to achieve one of them and then being disappointed by the others. Do it because you have a real public suffix.
For example many browsers won't let Cookies escape a suffix, so company A.some.example and companyB.some.example can't share cookies if some.example is on the PSL. Let's Encrypt name quotas care about the PSL so companyA.some.example certs wouldn't share quota with companyB.some.example. DMARC won't work on a public suffix, but HSTS preloading does.
There's somebody who wants them to do something, but Google themselves seem to say subdomain leasing is OK. [1]
[1] https://medium.com/@loish/a-response-to-danny-sullivan-and-g...
So now perhaps the Googlebot notices if a subsection of a site is radically disconnected and treats it as an independent publication.
But it's not a penalty in the legal meaning of the word.
site:docs.google.com finds approximately 4m results.
Since the publishers get paid for leasing out the subdomain and linking to it, you could argue that they are essentially selling links. That's apparently not what Google is saying though, because they'd penalize the sites selling the links, too, and only the leased out subdomains/directories have been affected, the rest of the sites are still ranking as they always did.