Just had my first experience actually needing the word count thingie and BOY was it a great help! I was pondering which of my sales items to delete from the page because I just knew I was out of words, when I realized ... I only needed 18 more to publish! Well, heck, I can write 18 words just by flourishing with what's already there, forget adding new stuff!
But looking it over again, I realized I did need just one extra paragraph for a better summation. So not only did your word counter enable me to keep all my sales items on the page, it helped me spot a weak area that needed beefing up!