I will certainly be keeping them all up-to-date manually. I've already uploaded a secondary download location on Google Drive and I might do the same on MEGA, Mediafire, Dropbox (or maybe an obscure but stable website like Box.com). It was primarily my animation folder, but after it finished, I thought it wouldn't be bad practice to upload a mirror or two exclusively for the sprite effects pack. I recently transferred about 30 GB to sync to my desktop. Pretty good news about Ainn's Sprite Effects Pack.