This isn’t the geekiest thing in the world but my brother pointed me to a website that deals with common English errors. This all started when I accused him of being at the “beck and call” of someone at work. Because most people, myself included, don’t properly enunciate their “d” when they say this, it sounds like “beckon call.”
That prompted him to look for this site.
When people misspell or misuse words and phrases, it really bothers me. The funny thing is that I’m not the world’s greatest speller myself. But the site has so many common errors that one could spend hours looking through them. Some are mistakes that I make on a regular basis, and will have to spend much time working on correcting them.
Edit: The reason we discussed the spelling is that we were talking about this using IM while at work.