The author just messed up the link. I contacted him on IRC, and he just fixed it:
https://www.mailpile.is/blog/2015-06-15_Community_License_Fe...
Hah, thanks for the bug report. Maybe skip the snark next time? :-P
My work-flow is to draft posts and other changes on my laptop and then use PageKite to show things to a friend or two to get feedback on spelling and content. In this case I mistakenly copy-pasted a link verbatim from the draft site into the post itself.
PageKite was working 100% as intended, this was just a typical copy-paste error. If I hadn't been using PageKite, you'd have seen a localhost link instead.
http://b.pagekite.me/blog/2015-06-15_Community_License_Feedb...
>>>
Temporarily Unavailable
The website http://b.pagekite.me/ is unreachable at the moment. Possible explanations:
The computer may have been turned off
The computer may be disconnected from the Internet
The PageKite program may not be running
Please try again later.
What kind of site is this?
This website connects to the World Wide Web using PageKite, a Free Software solution for exposing "localhost" servers to the public Web.
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Not a good show of PageKite's value.