when i go to the site the front cover avatar on home page doesn't show up, nor do thumbnails for any images. when browsing all i can see is the number of times an image has been favorited or whatnot. this is exclusive to this site. any ideas?

Try scrolling the page down and up. Works for me.

Refresh the page, close and re-open your browser, etc. It's an issue related to javascript processing client-side.