On a side note, I find it kind of funny how, when using the model trained on Reddit, some of the outputs contain a quite readable "The image you are requesting does not exist or is no longer available" text, and a faint "imgur.com" watermark in the lower left corner.

For the former, I guess when training the original model, a bunch of the Reddit images weren't available at crawl time. Wouldn't it make sense to somehow weed those out from the data set before the training?