I randomly discovered this amazing bit on info on the forums. Go into site settings, look for the "thumbnail size" option, set it to 100, and save. Custom thumbnails will now actually work not only on your profile page, but also on the front page!

just tested it out and im shocked... I dont know why its like that. but it is. This makes me seriously consider maybe merging my other account with this one as at least i can kind of sort content for different types of watchers.

But this raises the question why the hell are 150 and 200 px size thumbnails and option if they break custom thumbnails. Please save us IMVU