A SETI Overview and "Orbital Angular Momentum"

I found this article that basically gives a nice overview of the common techniques SETI (Search for Extra Terrestrial Intelligence) uses to try to communicate with other beings in the galaxy. If you haven't taken the SETI course, you should definitely read it as it is pretty interesting stuff. If you have taken SETI, there is some info at the bottom of the article talking about utilizing "Orbital Angular Momentum" to send more data further and faster than ever before. Click here to read the article, it's interesting!