New Application Advice

I think it’s time for me to learn more things about RoR and finally move
on to Rails 1.2. So, I’ve got my InstantRails 1.6 ready to go and am
looking at an application to use for playing with.

I would like to design something like MSDN or, more appropriately, like
the PHP documentation website (PHP: Documentation) with
basically content from manuals (API docs), community content (for my
engineers to add in more stuff), developer blogs, wiki for ad-hoc
documentation, developer forum, and user accounts for personalized
features. I think I’d also need to use things like tagging of content,
etc. I would ideally like to use the best tools for the best job (for
example, I’m currently using YaBBS for a developer forum) and might have
to look at ways to integrate these together if required. Either way, I
think it’s a useful project and I’d learn quite a bit along the way.

I watched the screencast for Hobo and was quite impressed. Are there
many people using it? I ask cos it seemed that the documentation is a
bit incomplete though the blog/ wiki seems quite responsive. I imagine
I may need to trouble the group a bit if I choose to use it.

What do you guys think?