Punctuation matters: punctuation, matters.
The official Associated Press twitter account just tweeted this:
to their 3.54 million followers, when what they actually meant was this:
Dutch military plane [comma] carrying bodies from Malaysia Airlines Flight 17 crash [comma] lands in Eindhoven.
Thanks to Jonathan Hitchcock (see comments)
Someone then realised that the missing punctuation gave the sentence a wholly different meaning, and quickly (9 minutes quickly) issued a clarification:
Which itself is hardly an example of perfect punctuation either.