And the site doesn't really shy away from that fact, acknowledging as much in its community guidelines.

CNN: What you should know about Tumblr

What we're here to do is to suggest community guidelines and have the community discuss that between themselves.

BBC: Social media laws to be discussed in wake of prosecutions

Well-drafted community guidelines give platforms personality (and reassure nervous parents).

ECONOMIST: Internet freedom

"We will, at times, restrict content on country-specific domains where a nation's laws require it or if content is found to violate our community guidelines, " said a YouTube spokeswoman.

BBC: Google challenges Russia YouTube video ban

Employers should stay in touch with state and community health authorities and align their guidelines according to local conditions, Locke added.

CNN: Obama administration urges employer flexibility in H1N1 fight

Judge Alasdair Darroch decided against a prison term in light of Lord Woolf's guidelines, saying first-time offenders could be dealt with by community sentencing.

BBC: Burglar

At that Conference, the international community unanimously adopted the Substantial New Programme of Action for the 1980s for the Least Developed Countries, containing guidelines for domestic action by the LDCs, which were to be complemented by international support measures.

UN: [21 Jul 2000] DEV/2253 : LAYING GROUNDWORK FOR THIRD UN CONFERENCE ON LEAST DEVELOPED COUNTRIES, PREPARATORY COMMITTEE TO MEET AT HEADQUARTERS, 24 - 28 JULY