The "letter" format consists of concise communications, which are a vehicle to quickly communicate important pieces of new research. For instance, a theorist could submit to Economics Letters a thought-provoking example before the analysis is extended to a general theorem in a fully fledged paper that will go elsewhere. Similarly, an experimentalist or an empirical researcher could submit to Economics Letters some important preliminary results, where perhaps the threshold for robustness, thoroughness or completeness of the analysis is not as high as it would be for a complete paper. Comments or pedagogical notes are not suitable for transmission in this form. The following are important features of the "letter" format: Concise: Contributions are usually limited to 2,000 words (12 manuscript pages), allowing readers to determine their potential interest in a letter very quickly, and to digest a large amount of material in a usable form. Rapid: The fast review process and immediate online publication ensure a brief manuscript turnover time. Efficient: A quick way to stay up-to-date with developments in all areas of economics.