Padsites.org is the web-based database of download sites operated by the Association of Shareware Professionals in cooperation with Submit-Everywhere.com software promotion service. It provides detailed information and commenting on the various download sites out there. You can learn more about important characteristics of each download site, such as page rank, host country and much more.
Many download sites support the Portable Application Description (PAD) format, which is used for describing software products. It's a useful standard which is further elaborated on at this site. Here you'll also be able to find a user-friendly walkthrough which will guide you through the process of creating a valid PAD file and verifying it, then you can submit PAD files to multiple download sites.
