Misinformation vs. Disinformation

Facebook’s recent Truth Kerfuffle has generated 10,000 articles and counting. I’ve noticed quite a few authors — Zuckerberg included — using the word misinformation where disinformation would be the more appropriate term. Here are the definitions (via Wiktionary):

Misinformation: Information that is incorrect.

Disinformation: The dissemination of intentionally false information to deliberately confuse or mislead.

That’s all I got. Thanks!