The RTA label is free to use, voluntary, and universally available to any website that wishes to clearly and effectively label itself as being inappropriate for viewing by minors.
This chart represents Restricted to Adults Label web usage trends over a historical time period on a large selection of website homepages queried by BuiltWith. See the FAQ for more information.
We know of 25,222 sites using Restricted to Adults Label, download website list.
The usage trends within the top million sites are updated once per week with the last update occurring on 18 May 2012.
For more information about Restricted to Adults Label visit http://www.rtalabel.org/index.php?content=howto.