[cableshaft]

Most business and web programmers would find it useless, perhaps, but if you're wanting to go into video games, simulation, physics, aerospace, robotics/internet of things (i.e. sensors), or the about to explode virtual reality field, you will most likely benefit quite a bit from linear algebra.

I've found it much more useful than my calculus classes, personally (although calculus is also useful to know for most of these industries).

Yes, those are specific industries, but that's quite a few specific industries. There's probably others that could benefit from it as well.

[gozo]

That's more because math is important to those fields though. If you're making e.g. a video game math is a very small part of the overall work. It's cool as a hobby if you can go "I know math and I know programming, therefor I can make this game like thing". But if you wanna work as a game programmer your better off focusing on that and figuring out whatever math you need along the way.