Thanks to SierraEx for letting us use this awesome vector of Derpy. We used it to place a little Derpy at the bottom of the main page. We'll be hiding other ponies in various pages, so keep an eye out for them. If you want a real challenge, try to find the hidden Pinkie Pie.
Make sure also to look at SierraEx's DA page; it's full of fantastic artwork and nice looking vectors!