I added a flock of discussion web and nntp forums to the website. Initially I added one per printer, plus one per vendor, and a few others, but that made for over 1000 groups, which was silly. So I toned it down to linuxprinting.general plus one general group per printer manufacturer. There's even an actual thread underway in the Epson one.
Now I need to get mailing lists working, and connect them to the news server. I'm thinking mailman, although it has a lot of baggage I don't need, and only minimal scriptability. Really just a bounce processor would be quite enough.
Michael suggests a LaTeX style repository like themes.org. I agree, although that repository already exists in CTAN. What's needed is more people who prefer LaTeX for certain tasks (I know I do) and grok TeX (I don't) enough to write useful styles compatible with the standard ones.