While legal considerations might be your biggest worry, making your site more accessible is simply good customer service. More than 39 million Americans are blind and another 246 million have "low vision," Another one million are deaf in the U.S. Add to that people with mobility issues that prevent them from using their hands and that's a huge portion of the country's buying power.
The legal issue for websites is whether website operators are operating “a place of public accommodation.” The statute lists 12 different types of public accommodations including somewhat of a catchall that includes “other sales or rental establishment.” The list, created when the law was passed in 1988, conceivably covers most commercial establishments, but does not expressly include websites.
Currently, the law is a little bit murky when it comes to ADA compliance on a website. Courts have been interpreting ADA in various ways when it comes to website compliance. Some courts have stated that any US business must have an ADA-compliant website. Some courts have said that the website must have a “nexus” to a physical location which must be ADA compliant before their website must also be compliant. This is why Facebook was able to dismiss a 2011 ADA case in California, but Home Depot was no...
The ADA is the Americans with Disabilities Act, passed almost 30 years ago in 1990. This act was originally put in motion pertaining solely to physical location. It requires establishments to provide people with disabilities easy access to various levels throughout the business. This act was set to achieve an equal experience to all people, handicapped or not.