That being said, I would be most happy if these sorts of user-contributed tools were open-source (but not "attached to this post are the source codes, steal as you wish", but with clearly defined permissive licence, and clear versioning using open-source community tools, such as github, sourceforge, etc.).
Then everybody could contribute useful code changes, or modify it to suit their needs, and these tools would grow with the community. Once Corona goes commercial, I will definitely support this (for example by offering people like excimer some rewards for publishing the script as open-source).