Small update this morning that gives you the option to have all images that are too wide for their container to be automatically resized. This should prevent images from flooding over into the MGoBoard list, and other lists, on the right side of the page if they're huge.
I'll be working on getting it togglable (not sure that's a word) so that you can have the convenience of reasonable sized images with the ability to blow them up as big as you want.
Once again, the link to the extension is https://chrome.google.com/webstore/detail/plgbhpppodkjceilgjeepcjbjdamknld
Previous information about what else it can do is here: http://mgoblog.com/mgoboard/ultra-mgoboard-v15. My apologies for the gigantic Denard picture, I was using it to test the current version. (However, if you install it, Denard will be brought down to a more manageable size.)