I've only seen a couple of messages sent out so far but both them had multiple equal signs in very odd places.
Here's a cut and paste example...
I've just noticed you posted a comment here at Media C= ause on an article called Google Grants Maximum CPC Moving From $1 to $2.
Please check back soon for the response to your comment. The link belo= w will take you there directly.
Return to your commen= t.
Many thanks for sharing your views with us.
Much appreci= ated.
What's the reason and how do I stop it?