See also https://www.zdnet.com/article/ibm-gets-100000-fine-for-peace-love-and-linux-campaign/ https://www.zdnet.com/article/ibm-gets-100000-fine-for-peace...,

See also https://www.zdnet.com/article/ibm-gets-100000-fine-for-peace-love-and-linux-campaign/ https://www.zdnet.com/article/ibm-gets-100000-fine-for-peace..., although perhaps the comparative permanence of the ads increased the fine: > Ad firm Ogilvy & Mather spearheaded the campaign for IBM, hiring people to paint sidewalks with the stencils in a black chalk that was supposedly biodegradable. However, after several months, many of the stencils could still be seen.