https://picasaweb.google.com/lh/view...=G&q=&filter=1
http://alba.rajce.idnes.cz/?sort=createDate
These 2 links give you list of new added albums. Unfortunately only visual searching is possible now on the picasa and rajce. You need to check every album for pee photos.
Another fast growing resource is Google Plus. It's possible to find stuff in Google Plus by regular google search engine but there are many different crap appears...
You can use a request -
https://www.google.com/#q=site:plus....bd03cb58c888fc
and change words, peeing, pee, squat, etc...