EugenI have modified mastodon.social code so that if there is a referrer header value, i.e. the visitor comes from a link, the frontpage redirects to joinmastodon.org.
Jonkman Microblog is a social network, courtesy of SOBAC Microcomputer Services. It runs on GNU social, version 1.2.0-beta5, available under the GNU Affero General Public License.
All Jonkman Microblog content and data are available under the Creative Commons Attribution 3.0 license.