<meta property="og:description" content="CopyleftConf will provide a friendly and safe place for discussion of all aspects of copyleft, including as a key strategy for defending software freedom in Brussels on February 3.">
<meta property="twitter:description" content="CopyleftConf will provide a friendly and safe place for discussion of all aspects of copyleft, including as a key strategy for defending software freedom in Brussels on February 3.">