Everyone makes mistakes ...

But we should be extra careful when writing and publishing on the web.
Here are two mistakes that should have never happened. The first is a mistake that can only happen on the web. Someone wrote a description of a photo and that description should have never been made public. Remember, whenever you write something that is attached to a photo, a video or a story that is going to be published on the web, make sure that you won't be embarassed--or you publication won't be embarassed--if and when people see it. This goes for material that you believe will never make it out on the web. Trust me, it will get out.
The editor of laobserved.com said it best, "Tags, URLs and alt text all count as editorial content these days, for better or worse."
The second mistake is something that good research should have prevented. None of us can know every scrap of information that the world contains. That's why it is OK to check, and double check your research before publication.