Do Not Fool

Do Not Fool is like Do Not Track, but was created for April Fools Day 2011. It allows users to opt-out of Web-based shenanigans on April Fools' Day, on sites which respect the DNF header.

Origin and Motivation

The idea was originally proposed by Atul. Many Mozillians liked it because it speaks to a significant number of people who dislike April Fools' Day, and also provides a nice opportunity to educate readers about Do Not Track.

Reference Implementation

Gandalf made a reference implementation. Its source code is on the Add-ons Builder, and the add-on itself is on AMO.

Logo

The logo pictured at the top of this page was created by Sean Martell.

Blog Post

A post entitled Protecting Users From An Age-Old Threat was published on the Mozilla Labs blog announcing the initiative. Additionally, the post was propagated through official Mozilla Twitter and Facebook channels.

Reception

• GigaOm included it in their list of favorite April Fools' pranks.
• Hacker News thread
• Conceivable Tech wrote about Do Not Fool: Mozilla Tests Firefox Do-Not-Fool Add On

Sites Supporting The DNF Header

Sites which have implemented support for the DNF header:

• ourdoings.com
• toptranslation.com

Support For The April 1 Firefox Nightly

Due to bug 645063, DNF will not work as expected in the April 1 nightly. The joke's on us.

Solutions:

• Clicking privacy/advanced/privacy enables the injection.
• The latest revision of DNF supports the nightly.