If you have come across a site that is inaccessible, and you want to let them know of the importance of accessibility for a web site, and ask them to make efforts to make their site accessible to all, it is a good idea to send the webmaster of the site a message expressing this. Although many sites ignore such letters, there are also many that are receptive to visitor complaints and they may make their site accessible if they receive enough requests.
In fact, many sites claim that they don't make their pages more accessible because they don't think their visitors need them to be, and quote lack of complaints as their reason. Make sure that sites you visit know it's important to be accessible by everyone. Don't let ignorance be their excuse. You may want to encourage them to visit the Accessible Design Guide at: http://www.anybrowser.org/campaign/abdesign.html for advice on how to make their sites more accessible.
Below are some example letters that have been sent by participants in the campaign, that you can modify for your own use when you notify sites that they're inaccessible and that you want them to fix it. If you have any example letters that you think should be listed here, please let me know.
Letter Courtesy of Robert T. Butler
Dear business, I must sadly inform you that your exclusive use of frames and/or java has cost you a potential customer. I, like great number of Internet users, log on to the WWW via a frames/java-incapable browser. It is the mark of a smart business which explores the powerful marketing potential of the Internet, yet excluding a significant portion of your market from viewing most or all of your web site conjures quite a different image. Indeed it is also frustrating for those of us who are eager to conduct business over the Internet, yet suddenly discover that our browsing software is no longer supported. Even more frustrating is knowing that a simple text or no java/frames alternative could be supplied. The better businesses on the WWW offer this service. Nonetheless, the unhappy trend is to simply tell the user to upgrade his software. For many of us this is not an option, as our hardware cannot support it. Your business has obviously invested a good deal of thought, time, and money in bringing your site to the WWW, so why do an incomplete job of it? Let us low-techs view your site. Your business can only profit from it.
More Example Letters:
Polite commentary requesting the site make their pages usable by any browser
-Courtesy of Peter Froehlich
Polite and to-the-point request for alt text on graphics-only page
-Courtesy of Ramon Casha
Polite request for alternative text on a site accessible only with graphics
-Courtesy of Bryony Lake
Polite Request to send to a Java/Frames site that is inaccessible
-Courtesy of Jean Yim
Another polite Request to send to a Java/Frames site that is inaccessible
-Courtesy of Robert T. Butler