Predictive Markets has learned several important lessons over 10 years of concept screening using their virtual share market platform: [1] Less is more when describing concepts - focusing descriptions to around 25 words garners better engagement than longer 80+ word descriptions. [2] Visuals are more effective than explanations when introducing concepts - showing rather than telling captures attention better. [3] Including introductory insight statements for concepts does not improve screening outcomes - the concepts themselves should be insightful without extra statements.