Due to reasons yet to be determined, the website of the World Wide Web Consortium, w3.org/w3c.org, is being filtered as child pornography (wget/curl) by the Finnish ISP, DNA Internet.W3C filtered as child porn by Finnish ISP (Thanks, Andrew!)
Update Sept 27. 3PM: DNA has removed w3c from their list, but another ISP, Mikkelin Puhelin (MPY) has added it (dig/host).
From Wikipedia: The World Wide Web Consortium (W3C) is the main international standards organization for the World Wide Web (abbreviated WWW or W3). It is arranged as a consortium where member organizations maintain full-time staff for the purpose of working together in the development of standards for the World Wide Web.