The largest frustration is that it is an ongoing story that is updated infrequently, much like any gaming campaign I've even been a part of. Still, I check almost daily to see if Rich has updated the adventure (even though he only does so about once a week now). I know that it is working towards a conclusion ... well, perhaps in another decade at this pace, and I'm eager to see what it is, but for now I just like having something to look forward to (like when I'd get comic book subscriptions through the mail).
If you're interested, it's worth it to start at the beginning:
http://www.giantitp.com/comics/oots0001.html