DocumentCloud is a platform founded on the belief that if journalists were more open about their sourcing, the public would be more inclined to trust their reporting. The platform is a tool to help journalists share, analyse, annotate and, ultimately, publish source documents to the open web. DocumentCloud is a non-profit organisation totally committed to trust and transparency
the site is fine according to Google safe browsing diganostics it hasen't hosted malware or anything and WM tips says it's good and McAfee site advisor says it's a good site. so I have concluded that the site must be safe.