[tag:embedded] has questions about embedded systems, about audio embedded in a PDF, and about embedding a terminal in the desktop, as well as [this one](http://askubuntu.com/questions/65500/can-i-ssh-via-usb) about a tablet, which might be considered an embedded system by some.

What does this tag mean?  

I ask because I've tried to follow questions about electronics on several sites across the network via [this feed](http://stackexchange.com/filters/12100/electronics-questions-not-on-ee), should AskUbuntu's [tag:embedded] tag be included in this feed?