Quote from: ETFbitcoin on August 19, 2023, 08:52:36 AM

While SEO spam usually removed on this forum in short interval, in past few months i notice higher frequency of SEO spam on some boards on this forum. In addition, i notice some technique which used to evade removal/report such as,

I'm sure Bitcointalk is a NOFOLLOW site, prior to March 1, 2020, all links on NOFOLLOW sites have no effect on indexing and ranking.

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Google introduced the nofollow attribute in 2005 as a way for publishers to address comment spam and shady links from user-generated content (UGC). Linking to spam or low-quality sites could hurt you, and nofollow offered publishers a way to protect themselves.

But after March 1, 2020, Google treats links on NOFOLLOW sites as a hint to index or rank a site

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rel="nofollow": The nofollow attribute is for cases where you want to link to a page but don’t want to imply any type of endorsement, including passing along ranking credit to another page, Google said.

Today vs March 2020: Today Google will treat the nofollow attribute as a hint for ranking purposes. Meaning Google might count a link as credit, consider it as part of spam analysis, or for other ranking purposes.

On March 2, 2020, Google will use it also for crawling and indexing. That means will Google use it as a “hint” as to what should be indexed or crawled...

So SEO spam is now being used to try to index or crawl a site, especially a new site.
But I don't think Bitcointalk will be penalized for those Spam links but its recommended to be take these down

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To be clear, if a site is properly using nofollow today, SEOs do not need to recommend any changes be made. Though sites are free to do so, they should not expect any rankings boost for doing so, or new penalties for not changing.

https://searchengineland.com/google-to-treat-nofollow-link-attribute-as-a-hint-after-march-1-2020-321664

https://moz.com/blog/nofollow-sponsored-ugc

Note: I have the same response to one of your posts and this is the reason why there is a high frequency of SEO spam.