Steven de Guzman, who was the main poster to the blog and spam detective, got banned three times. The third ban has stuck.
Quora does not like this blog, and in fact thinks that it is getting in the way of them doing their own job. See the arguments between Timothy Wingerter (Quora employee at the time) and Guzman in comments; e.g. https://spamdetectives.quora.com…, https://spamdetectives.quora.com…, and especially https://spamdetectives.quora.com….
(Do read that last comment, even if it is quite long. It’s very rare that we hear anything from Quora employees about what they’re doing, and Wingerter does make a cogent argument for why they don’t want their spam process usurped by users.)
Not to mention Is Spam Detectives at risk of being deleted? by Steven de Guzman on Spam detectives, and Incorrectly banned on @Quora for allegedly having sock puppet accounts (Part 2) —Steve’s second ban was rescinded on the condition that he did not continue to report spam, which he did not adhere to. (His return prompted Wingerter’s comment that he’d rather the blog did not exist.)
Read the blog and comments, talk to other posters there, and make your own assessment; but anecdotally, if you link to or repost too much spam, the bots and/or mods will mistake you for a spammer, or find that your efforts are getting in the way of their efforts, and take action against you.