dogtrax is a user on mastodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
If you don't, you can sign up here.
(CLMOOC is an open learning network/ecosystem/community/whatever that has open invitations to create and connect. For July, it will be all about doodles on map and place themes. Info: https://clmooc.com/summer2018/)
