Heard of location, location, location? For online marketing, it’s content, content, content. Things like tone, date and time and frequency impact how you attract and engage your audiences (or not). A free seminar, “Content Marketing: What to Say, How to Say It,” will be offered Tuesday at Triangle South Enterprise Center in Dunn. Instructor Melanie Diehl will cover tidbits like how many links create the most engagement, how to create high-open subject lines, tips on using pictures and videos and more. The seminar is from 5 to 7:30 p.m. For more information, call (910) 892-2884.