I’m sure as geeks we’ve all encountered our fair share of grammar nazis in our time (and many of us may be ones in our own right). Of course, when you really take a look at the English language (especially if you have another non-European language to compare it to) you can start to forgive people for some grammatical errors. Because, you know, English is just freaking weird sometimes.
Edit: This text is by Richard Lederer. Thank you, Geoff!