@anildash I'll second and third this. Glitch.com is AWESOME. Nothing like spinning up a full fledged domain running node with the click of button.
Not having to worry about how to "post" things (hey, I can walk over to another machine and run my demo) or host media is GAME CHANGING for learning to code.
[Notice Regarding the Transfer of the mstdn.jp / mastodon.cloud Services] We have received several inquiries showing interest in a transfer following the announcement of the end of the mstdn.jp and mastodon.cloud services. As a result of subsequently evaluating the situation and making preparations, we have decided that the corresponding services will be transferred to Sujitech, LLC. on June 30. Thank you.