I personally never thought the content farm problem was as big as it's blown up to be - but I am genuinely curious to see how far their stock drops after this update. This is mostly because I have little awareness as to how markets work, or how much something like this could potentially impact their stock price.

"Tanks" is just a superfluous term that makes it seem like I personally have it out for them, when in actuality that's not the case. As an SEO, though, they (and other content farms) do compete with many of the websites I work on, so I am glad that they have dipped - although I have no particular ill will against them.

I don't think enough sophisticated investors hold Demand stock for this change, which Demand did a good job of spinning the news of, to have a great impact on the price.

It is mostly pension and mutual funds that make up the shareholding. There aren't even any dedicated analysts on DMD atm.

It helps them that Google didn't mention any companies by name when referring to low-quality content and farms.