Facebook Sharing : Description incorrect

You haven't done anything wrong. Its simply a caching issue on Facebook's end. When you add (or update) Open Graph tags, it can take Facebook a few days to see the changes.

Running your page through the Open Graph Debug Tool, below, you can see that the pictures are correct:
developers.facebook.com/tools/debug/og/o...-30-11-38-32%2Fchris
Additionally, that tool will immediately update their cache. Now, when I try to Like from the blog view or directly in the article, the right image shows.

Please feel free to test more, but hopefully just waiting (or running each page through that tool) is all that's necessary.

Thanks,
Alex

Glad to hear we could help explain and that things are moving along now.

As for the default description length, yes, it can be changed, but it takes a minor code change. The next release, v6.0.4, due out later today actually, will have that count increased from 10 to 50.. which should suit anybody's needs.

The other alternative is to create an Open Graph Object for your pages, where you can have more control of the count from the admin area, but ideally, our defaults work for 90% of people.. and with the update, that should be the case.

So, I'd just wait 24 hours and update, if that works for you.

Thanks,
Alex