In an  interview  with hiddeninthesand.com, Joe talks about how they're brainstorming ideas and formats for the successor to the Internet Show.  The way it's worded makes me think they're not thinking in terms of just "the internet" being the medium for the next show.  We shall see.
Surely, at some point in the future they hope to be able to do it.  Just how it's done remains to be seen.  At the very least, as long as they're a band, I can't see them not ever putting out more funny videos for our amusement.