Open Graph Object Debugger

Yes. When an Open Graph tag is set, it should look like:Where the 123456 is the user's Facebook ID.

Many extensions will set a tag on the page that looks like:That's a valid tag and *not* a Facebook Open Graph tag. However, Facebook will still try to parse it if an og:author tag isn't set. The warning is that the alternate tag above should use property= instead of name=. Ultimately though, it doesn't matter, since the tag won't be correct since it's not using a Facebook User Id... so it's proper for them to ignore the tag.. and throw a few warnings in the process.

Supporting the og:author tag is something we have planned for a future update as well, so you know.

I hope that helps explain,
Alex

Correct. JFBConnect won't add that tag. Also, I'm not going to say it's a 'bad' tag, just one that Facebook thinks is bad. It's actually fine to have on the page and shouldn't cause any problems.. it just doesn't give Facebook any more information about the page.

I hope that helps explain, and best of luck,
Alex