Please, upload all your logos to http://commons.wikimedia.org (free license). If you use DropBox or any other hosting, your logos will be deleted and lost in some weeks, months or years. And this logo discussion has an important historical value.
Emilio J. Rodríguez-Posada. E-mail: emijrp AT gmail DOT com
Pre-doctoral student at the University of Cádiz (Spain)