It's the same with most Threadcasts (other then Task's tech one!), so I'd say to stick at it if it interests you and hopefully more people will join in time. Many just don't know what they are, and others are reluctant to dive in for some reason.
But yeah, premium and 15 comments required to get it up the top. Yours did end up there and got a few more comments I think so at least it wasn't just you in there ;)