I like the look of meteor, never tried it before, thought it would make a great platform for a web dashboard on my raspberry pi. Tried the recommended installer and got this:
$ curl install.meteor.com | /bin/sh
Unable to install Meteor on unsupported architecture: armv6l
Apparently, there are prebuilt packages for raspi now. Alas, I lost interest long ago - details of prebuilt packages here: http://meteor-universal.tumblr.com/
(Thanks to @Archonic - see the comments below - and if you'd like to make that a real answer, I'd be happy to change the accepted answer for this question.)
I'll keep the text below for reference.
(Updating as I go along...)
Note: i'm doing this on the stock debian image, albeit after having installed ruby, passenger and padrino (and all their dependencies). Archlinux may be easier, I don't know.
Does not work by default, followed instructions here
git clone git://github.com/meteor/meteor.git
Essentially, remove all the instructions regarding building node.js, and all references to a tempdir, so you end up just installing node packages. I will post mine as a gist once it's all figured out...
Then, run it in an empty folder
install mongodb. From source.
cd to extracted directory, and install using scons
sudo apt-get install scons libboost-all-dev scons libboost-dev libpcre++-dev xulrunner-1.9.1-dev
(Note: I will be finishing this soon. I think the trick might be to use meteor's bundle functionality - especially the big red box http://docs.meteor.com/#deploying - but unfortunately my pi has crashed and I'm away from home. Please post if you found that worked, and I'll update this answer accordingly or accept your answer)