Podcasts are an excellent way to participate in social media if you have an engaging personality and you're a better speaker than you are a writer. But, there's so much focus on blogs that many forget that podcasts are indeed a viable option or, because podcasts involve content in a non-text format, they think podcasts require too much work. Not so. Podcasts afford you the sense of tone and inflection that text-based content never could. It also gives people a two dimensional experience of you, as opposed to the one dimensional experience of text.