You e-mail a pitch to a blogger and — nothing, nada , zilch. What’s up with that? “The top bloggers receive hundreds of pitches a day,” writes PR pro Heather Whaling. “Even bloggers with less traffic to their site are still being pitched on a regular basis.” What can you do to grab their attention and motivate them to write about your company or brand? Follow the five Cs, says Whaling. She explains .