We tested DM length from 5 to 200 words and found a 10-word DM that added $60,000 to a client's revenue. After discovering that people's brains are wired to scan not read, long messages trigger decision fatigue, and short messages create curiosity gaps, we generated wild numbers: $60,000 from LinkedIn DMs in 90 days, 27% connection acceptance (industry average: 8%), and 41% response rates (most celebrate 10%). This 15-page guide documents our entire testing process and the exact 10-word templates that helped add $60K in 90 days. Learn why 10-15 words is the sweet spot and get the complete framework that works when long DMs fail.