PRNEWS staffer Sophie Maerowitz spends her off-hours volunteering for New York City cyclist, pedestrian and public transit advocacy organization Transportation Alternatives. At the start, she figured it would be the usual rabble-rousing stuff: showing up to protests, tweeting photos while holding up signs, et al. She now realizes it's that and much more. She offers tips from her experience at TransAlt that communicators can adapt to urge brand advocates to become involved in social issues.