To add a bit of activity to this thread, I'll dump the top 5 pixiv artworks of the day everyday.

You can see it yourself here : http://www.pixiv.net/ranking.php?mode=daily

To see the source of a picture, just add a part of the filename (the number) to a member_id url.

Example with the first picture : http://www.pixiv.net/member_illust.php?mode=medium&illust_id=55243920