BLU & ATH have enacted significant economy changes, BLU has seemingly decided to make their economy significantly more harsh, generally rewarding upload rather than seed time more than in the past and especially punishing smaller torrents when it comes to BON.

ATH has moved towards rewarding long seed times significantly more along with both ATH & BLU rewarding full disc seeding quite significantly. ATH Also now requires uploads to be granted access to the invite forums.

Not sure what to think of BLUs changes personally but ATHs look very positive! both have also implemented a buffer system to limit BON spending on upload.