Mencap have a two-page PDF about making websites accessible to people with intellectual disabilities which can be downloaded from the ‘guides to accessibility’ page in the accessibility section of their website
These sites either target visitors with significant intellectual disabilities, or have attempted to address the accessibility needs of this group. Most of the sites need additional work to meet with WAI accessibility guidelines:
http://www.mencap.org.uk
Mencap is the UK's largest
http://www.askmencap.info/
Mencap also provide an online information service for people with
http://www.learningdisabilitycoalition.org.uk/
is the homepage of a coalition of UK campaigning group for people with
http://www.peepo.com/
Peepo is a long established picture directory for people with
http://www.newhameasyread.org/
This site is a transition portal linking to numerous mini-sites created by people with
http://www.ckglasgow.org.uk/
Common Knowledge is a social networking site developed for and around a group of
http://www.symbolworld.org
Symbol World is a popular symbol based news, magazine and reference site created by Widgit Software. Text-to-speech is optionally provided via BrowseAloud and Widgit's own Web helper application Webwide. The Widgit-Rebus symbols used to support text on this site are the most commonly employed symbol system in the UK, although other similar notably those of Makaton, BLISS and PCS are also in widespread use.
http://www.ookjij.nl
A Dutch site for people with a learning disability. It uses sounds and pictures so it is easy and fun to use - even if you don't speak the language.
Top
Some accessibility sites are downright ugly, but the problem lies with those sites’ designers and not with accessibility, which carries no visual penalty.
Jeffrey Zeldman, Designing with Web Standards, 2003
Although serving the needs of people with disabilities should of course be a concern, the far wider issue – that accessibility is a matter of usability – has rarely been discussed. As designer professionals, we should be designing our content so it is globally accessible and meets the needs of as many people as is possible and practical given our specific circumstances, regardless of their abilities or the type of device they choose to access the Web
Andy Clarke, Transcending CSS: the fine art of web design, 2006