SEO niche keyword spammers have discovered that Tumblr matters and ranks well. Crap.
Example spam tumblelogs that I won’t link on principle: - howtosellacar.tumblr.com - how-to-learn-french.tumblr.com - titan-quest-strategy-guide.tumblr.com
They call themselves “affiliate marketers”. I call them scum, and I’ve already developed accurate heuristics for detecting them.
If Davidville decides to remove them, they’re getting nuked. I absolutely will not tolerate spam on my sites, even if it’s entered by humans and attempts to pass as legitimate content.