the file it downloads is 0bytes i assume its just for the selfcheck.
It only reports on a few ip’s.
EG. set to NL ip its fine, US ip its fine UK1 ok UK2 ok but UK3 it blocks

Pixldrop is a photo sharing site, well screen capture and auto upload and i know its clean.
Zulu finds site benign : http://zulu.zscaler.com/submission/show/9bcef5ad93e6fc3158fddb216d0fe39a-1376599878