As I noted the other day, Kinja has been doing a weird thing where it duplicates my posts in the dashboard:
This one gave be a very strong non-parallel lines illusion though (the roof appears to angle down much more sharply in the bottom photo even though the images are the same).
Sploid did a post on this effect a while back:
This Surprising Illusion Makes Two Copies of the Same Image Look Like Different Photos
Brains are weird