I thought I was all done with Venn Diagrams (after my last post), especially about nerds and geeks, but here is the last word, from XKCD:
Here is the last word on bikes:
And this really is the last word:
As a Brit, I liked this one, explaining the whole “United Kingdom of Great Britain and Northern Ireland” thing. 
Here’s another Venn Diagram I first saw on the walls of Techstars Boston, originally posted by Bud Cadell on his blog under the title How to be Happy in Business. This is a non-trivial commentary on building and running a business (geeks and nerds in particular need no further prompting to study this closely). I found another variation (see right) on this theme on Flowing Data (which also links back to Bud’s graphic as well). Both make important points… but, if only business was so easy.
suggestion about information systems security, noting that a system is secure when it does exactly what it is supposed to do, and nothing more! (It strikes me this is a good definition of quality as well as security.)
For fun, check out this interactive TwitterVenn website that uses a Venn Diagram to show overlap between terms you can find in the tweets over a the last day. You can use your own search terms … these are “chocolate, milk, hot”.How much overlap do think there is between the circles?