If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Useful chrome-plugin for learning to do fermi calculations:
http://blog.xkcd.com/2013/05/15/dictionary-of-numbers/
Looks interesting (but unfortunately crashes when attempting to install it on my chrome.)
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.