Bug fixes!

git-svn-id: https://plugins.svn.wordpress.org/sharify/trunk@1034775 b8457f37-d9ea-0310-8a92-e5e31aec5664
improved commenting

git-svn-id: https://plugins.svn.wordpress.org/sharify/trunk@1034776 b8457f37-d9ea-0310-8a92-e5e31aec5664