Got feedback? Send us a text message.Grammar Girl, hosted by Mignon Fogarty, is celebrating its 18th anniversary this week. The podcast, which started as a "quick and dirty tip" about writing, has evolved into a show that explores all things language - from the exciting and fun to the quick tips. Over the past 18 years, Fogarty has seen major changes in the podcasting industry, such as the rise of dynamic ad insertion and the increasing presence of celebrities in the medium. While the core of...