While the world tends to look at the number 13 in fear (Paraskevidekatriaphobia), we tend to like that number at crowdSPRING. In honor of the Friday the 13th superstition, we “slashed” through the web to identify 13 exciting and engaging facts to help get those creative juices flowing. If, by chance, you are unlucky coming up with ideas on how to use these facts,...