Why is the LGPL license being used?
As a member of the GPL license family, the GNU LGPL or "Lesser General Public License" will be used for the OpenOffice.org source code. The LGPL has all of the restrictions of the GPL except that you may use the code at compile-time without the derivative work becoming a GPL work. This allows the use of the code in proprietary works. The LGPL license is completely compatible with the GPL license. For more information see the OpenOffice.org. white paper from Sun.