The gallery is still being transferred over. You will start seeing major image quality improvements over the next few days. Any thumbs that had a smaller width than 300px will use a scaled version of the main image so it is not extremely blurry. During the next week, we will also be implementing auto thumb resizing, so that on upload a thumbnail is not required. When clicking the contains 'violence', 'language', or 'nudity' this should pertain to the image not the thumb.

@Frequency good catch, the issue should be fixed.