BtoB has opened the nomination process for its 2013 Top Digital Marketers special report, which will be published in the June 10 issue. BtoB will honor 25 people who demonstrate vision and innovation in their digital marketing efforts. Outside nominations are being considered for b2b digital marketers only. Editors will select the honorees based on outstanding performance in developing innovative digital marketing campaigns, using new technologies and proving results. The winners will be honored at an awards ceremony in San Francisco in September. An online nomination form is available at www.btobonline.com/section/top_digital_marketers.