There was this April Fool's joke in the newspaper, where they were promising to do in-depth daily coverage of the preparations for the royal wedding (Will and Kate), like from MONTHS before, and this being the Guardian you knew it was tongue-in-cheek, but just in case there was any doubt they had a fake coat-of-arms with the legend 'TRANQUILLUS SIS IOCUM EST'. And since I care about the Guardian as the last bastion of educated right-on middle-class values, and (since I had been provoked once before by a headline which said 'VENI VICI IN DOMUM REDII'), I wrote a letter to the Reader's editor to complain about the grammar, and concluding -- oh, I've got a copy here: " ...Honestly, I don't so much mind the way Latin has become comic code for something between prestige and pretentiousness, but the heart sinks at this lame illiteracy. Next time the Guardian wants to put something like this on the front page, just check with me, or someone else who actually knows Latin."
Of course I came across as a humourless pedant, and the editor said something about how the cod Latin had been part of the joke. (I didn't believe her)
So not for the first time I started fantasizing about having a website called checkyourLatin.com, but I figured it would be a nightmare to run. Then I wondered what Latin resources were already out there; and found this site. Ta-da!