Happy Social Media Day, Champions! Today, June 30th, marks Mashable's 6th Annual International Social Media Day celebration to "recognize and celebrate social media's impact on global communication." "While every day is essentially Social Media Day, June 30th, 2015 marks the sixth-annual official global celebration. Last year, meet-ups happened all over the world including those in Egypt, Spain, and San Diego. No matter where you live, you can celebrate with us! Learn how to make Social Media Day official in your city, and follow @MashableEvents on Twitter for #SMDay updates." Did you know that among young adults that use the internet, 87 percent are on Facebook? It goes without saying that social media has revolutionized the way we communicate in every industry, including, without doubt, Real Estate. Social media is drastically…