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For starters, create a Freebase account at http://freebase.com if you don't already have one.
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Go to Fedora Repository: Projects http://www.freebase.com/view/guid/9202a8c04000641f800000000c389da1/-/projects/project_focus/projects
click Add More Topics
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View the new project that you have just created. Click orang "edit this topic" button towards the top right.
Click "Add another type..." and enter Software, selecting the Software type from the drop down. You will have multiple options in the dropdown. Choose the one from Computer Commons; /computer/software.
In the new Software box, click "edit" next to "Developer". Type in the name of the developer you want to list (probably yourself). If you don't already exist in Freebase, click "create new Software Developer" at the bottom of the drop-down.
Go to http://fedoraregistry.freebaseapps.com/ and see if your software has shown up.
There may be a delay of up to 5-10 minutes before your updates show up in the registry app. This is especially true if you are a new or infrequent freebase user.
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