FasTips aim to be a small but useful piece of practical and quick advice. FasTips are designed to serve impact assessment (IA) professionals, may they be consultants, reviewers or other professionals dealing with different forms of IA. The FasTips series offer practical clarification on frequently asked questions and are particularly useful for a quick look when there is no time for investigating or reviewing others' experiences or formal guidances. FasTips should help to improve best practice but are not meant to replace the IAIA Best Practice Principles series. Do you have a suggestion or a request for a FasTip on a different topic? Have you been using FasTips or sharing them with others? Let us know what you think! Contact Maria Partidário (mpartidario@gmail.com), FasTips Series Editor, with your feedback and ideas.