What's a Broadside?
Moishe Rosen created the unique style of gospel tracts known as broadsides in 1969. To be a broadside, the three fold-tract must be easy to read, good-natured (usually with some humor), affirmative of the reader and contain Scripture. We like to use contemporary topics as a springboard to talk about the problem of sin and God's gracious solution. Broadsides do not tell everything a person needs to know to be saved; we consider them "Invitations to interact with the gospel." Jews for Jesus has hundreds of different broadsides, including 30 that were created especially for this month's Behold Your God campaign in New York.
Source: http://www.jesusforjews.org/broadsides/what/