Using JOSM to edit the fosm database

To use JOSM to edit fosm content you will need to make the following configuration change:
 * Within JOSM go to Preferences (from the menu Select Edit/Preferences or press F12).
 * Select the Connection Settings tab, which is the second one down.
 * Change the Base Server URL from http://www.openstreetmap.org/api to http://api.fosm.org/api
 * Check the "Use Basic Authentication" choice (FOSM doesn't support OAuth).
 * Change the username and password to those of your fosm account.