Atheist Billboards Targeting Muslim and Jewish Communities

What would you do if one of these billboards went up in your neighborhood?

Saw a piece about these billboards on a CNN Blog.  They are certainly aggressive atheist advertising and thus within the bounds of free speech. Note that the word on the left is the Hebrew or Arabic word for Yahweh or Allah adding to the potential offense.   The challenge would be finding a billboard owner in the targeted Jewish or Muslim community to agree to have the sign put up.  An owner in New York refused.  What I am particularly interested in is the purpose of the campaign.  I do not think this approach will lead to converts.  It might provide support to closeted atheists in the communities, a point discussed in the article. I tend to see this as a matter creating more heat than light.  The campaign may not start dialog so much as start a fight.  In that way this approach reminds me of the Un-Fair billboard campaign addressing white privilege in Duluth.