Downloadable Content
MSPA Notifier - http://www.mediafire.com/?uby6mjo4635k3ib - Cost: Free
HS updates frequently and randomly nearly every day. To keep up without constantly checking, this program pops up a GIF with a little noise every time it updates, like you see here.
Andrew Hussie's Formspring Archive - http://dl.dropbox.com/u/40585720/Combined_Formspring_Web_Aug-28-2011.htm - Cost: ~8-10 Hours of your life
Read from the bottom up, the blog Hussie used for HS stuff up until Cascade. Lots of great stuff, a good read for fans. Very long, though.
Andrew Hussie's Tumblr - http://mspandrew.tumblr.com/ - Cost: Free
His current HS blog. Necessary following for info on upcoming events or new stuff in the store, etc.
Andrew Hussie's Twitter - https://twitter.com/#!/andrewhussie - Cost: Free
If you do the Twitter thing then you know what to do. The Tumblr does most of the important stuff.
Skaianet - http://ib.skaia.net/ - Cost: Free
It's an imageboard. Hrrr.
Friend's HS Fanart - http://artsyunderstudy.deviantart.com/gallery/ - Cost: Free
I am whoring this out to you for her.
Archive of Our Own - I am not linking to the ****ing fanfiction Archive - Cost: Too Much
Don't go to the ****ing fanfiction archive. You still have a chance to not make the same mistakes as me. Now I'm trapped.
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