Comment 6 for bug 83118

What freedoms do the Firefox terms curtail, in comparison to other free packages? For example, MySQL Query Browser icons are subject to MySQL's trademark policy, which restricts rights in several ways.

http://www.mysql.com/company/legal/trademark.html

Of particular interest is section 4c:

C. Trademarks and the GPL License.

The GNU General Public License (the "GPL") is one of the ways by which MySQL AB distributes the MySQL server. The GPL permits third parties to use and redistribute the underlying software under certain circumstances. Such use and/or redistribution of MySQL AB software products are much welcomed by MySQL AB, but should be distinguished from the use of the MySQL Marks. <b>The GPL does not provide any license or right to use any MySQL AB Mark in any form or media.</b> Thus, although a GPL licensee may redistribute the underlying software, a GPL licensee may not use any MySQL AB Mark in doing so without the express prior written permission of MySQL AB. Otherwise, users could be misled into thinking that revisions made by a GPL licensee were created or endorsed by MySQL AB, or that those revisions met the quality control standards of MySQL AB.