looks like homestuck inc. abused and exploited the dedicated fans that made an amazing archive of the webcomic (including an emulator for its interactive elements) and then killed it when they couldn't steal it from them.
i'm only about halfway through the blog post and it's pretty bad, hussie is a real piece of shit 
if you've already downloaded the unofficial homestuck collection it looks like it still works and you'll still have it so maybe it will be redistributed by the community, just can't be hosted or maintained by the creators at this point.