licensing issues for independent developers

I would like to get input from independent developers (for profit) in the list on the following: - What license are you using ? Is the GPL license a problem ? - Would you be interested in defining a new license to share code/components with other REBOL developers so that we can speed the group's development cycle and cooperate better ? If the second question is relevant to a few of you I'll go ahead and create a Yahoo Groups forum to move forward on this Thanks