The first time someone wrote that to me in an email, I couldn't believe it. He's my employer, and a very smart person. Now I see it all over. Like your/you're, and "Will let you know". Do people really think that "will" means "we'll"?
Sometimes I think there is a completely new language out there, and they're not mistaken; we're just behind the times, like how Ye Olde English evolved into today's American English. Imagine DDF a few hundred years ago, where AJK and I would be bemoaning someone who said "I think you should look into it", instead of "I reckon thou shalt delve into the matter".