WHO: Follow @Freesamplemomma and @MaltOMealCereal (You need to follow both to answer prize questions). WHAT: Malt-O-Meal is holding a Twitter Chat to introduce people to their partnership with Terracycle,  learn how to reduce your carbon footprint and to chat about Malt-O-Meal cereal. WHERE: Twitter: Use hashtag #MaltOMeal WHEN: Monday,…