Bad usability calendar: not usable at all (just kidding) but full of good advice!

Check out the Bad Usability Calendar site!

Before you start pointing out the bad usability mistakes in my blog (which I am well aware of, thankyouverymuch) take a look at this calendar-- it's really good, though its purpose is not to actually be a calendar, but to demonstrate one interaction design mistake for every month of the year. Plus they provide the "source" files so you can make your own.

Nice.

Also, funny.