I was big into usenet for a long time back in the 80's and I was still into it up till a few years ago. I had a usenet reader for my
Psion Series 5 but with the growth of forums like this one, I find them less useful.
Come to think of it, there are a few support sites out there that still use usenet (or they did last time I checked) but I usually access them through a web browser and don't feel like it is something I would want to do with a mobile.