...and this might even be one of these times. There are two foreign language gaming blogs that I check up on from time to time, even though I can't read the text. Normally I just check out the pics and mouse over the links in hopes they might lead to a cool site that happens to be in English. One of the sites is The Prussian Gamer, which is in German, while the other is Demons & Dragons, a Polish-language blog.
Anyway, I found this chart recently on Demons & Dragons:
That's a really nifty chart, but I decided to add some stuff to it. You'll probably need to click on this one to be able to read it.
OD&D - The OSR and Innovation - A Few Thoughts
21 minutes ago