Meanwhile, the tech community and our courts system were forced to deal with the issue on their own. First, the tech community coalesced around a set of standards via the World Wide Web Consortium, establishing the Web Content Accessibility Guidelines in 2008 and later updating them in 2012 (WCAG 2.0), when they were also adopted as an ISO standard. Today, web designers and developers across the world use WCAG 2.0 to guide their design and development, typically aiming to meet all of the standards under Level AA.
The ADA guidelines are often updated so that businesses can better understand how various disabilities can affect the way that people will interact with websites and digital content. The guidelines also explain why certain barriers can prevent disabled individuals from using or even accessing a website. With these goals in mind, it is important to note that organizations need to review the guidelines on a yearly basis. New technologies, such as Artificial Intelligence10, are being used to help people with disabilities get the most out of the digital world. If organizations fail to read the latest ADA guidelines, then they will soon discover that their approach to web accessibility is outdated, and they might be in violation of digital accessibility laws.
If posted on an accessible website, tax forms need to be available to people with disabilities in an accessible format on the same terms that they are available to other members of the public – 24 hours a day, seven days a week, without cost, inconvenience, or delay. A staffed telephone line that sent copies of tax forms to callers through the mail would not provide equal access to people with disabilities because of the delay involved in mailing the forms.

Without a definitive ruling, there is room for a difference of opinion. That’s exactly what happened in 2015 in the 9th Circuit Court of Appeals, which ruled that Netflix is not subject to Title III of the ADA because it has no physical place of business. This opinion was unpublished, meaning it is not intended to be considered legal precedent, but it certainly makes it confusing for businesses that are not sure where they stand under the ADA.

If you do get sued, if you immediately remediate your website, you may be able to get the lawsuit dismissed on mootness (there’s no longer anything in dispute, i.e. plaintiffs are arguing your website is inaccessible but you’ve already made it accessible). This definitely does not mean you should wait to fix your website but it does mean you may have an out.
Use the plugin, follow its instruction, and resolve the compliance issues identified. You’ll find that using the plugin will save you an incredible amount of time as you maintain your site’s compliance on a month-to-month basis. The best part, it identifies the compliance issues and tells you exactly which code elements are out of compliance and why! Our average customer is reporting a 10x-20x time savings over manually identifying and fixing these problems. In extreme cases more than 30x time savings has been reported! Using the plugin alone does not guarantee compliance. Some parts of accessibility can’t be automatically scanned and must be manually audited but we also provide independent 3rd-party audits and certifications of compliance. The Accessibility Suite Pro Plugin for WordPress makes this process profoundly easier.
Your company’s website is your primary communications tool and a vital part of your infrastructure. Your clients and customers -- both current and potential -- are coming to you from a wide range of backgrounds, experiences and perspectives. It makes good business sense to have a site that is accessible to as many people as possible to demonstrate to your users and clients that you understand their needs and want to meet them where they are in order to best serve them.  
This plugin has been very useful in creating a fully ADA compliant site. Not only is it cheaper than most plugins, it encourages you as you work on the site. Letting you know what needs changed, and how far you have left to go. There's been a few issues' I've noticed with the builder "Themify", in the scanning. But whatever the issue is, most of the time the plugin creator has been very helpful in resolving these issues. The creator of the plugin responds within about 3 hours or less whenever you email. Most the time it's less than 30 minutes depending on the issue. Very glad to have such great support for the plugin. I highly recommend any business that is looking for building a ADA Compliant site, to use this plugin as it has done a great job for websites I use, and it's got a great price tag! It's well worth the price, and the additional features it gives to show you the definition of what each error is, is very useful.

UPDATE: Since writing this post in August 2017, several important changes have taken place in the laws regarding ADA compliance for websites. On December 26, 2017, the Department of Justice announced that they have withdrawn the Obama-era Advance Notice of Proposed Rulemaking mentioned in this article which intended to require ADA website compliance. The DOJ’s withdrawal announcement stated, “The Department will continue to assess whether specific technical standards are necessary and appropriate to assist covered entities with complying with the ADA.”
Blind people, those with low vision, and people with other disabilities that affect their ability to read a computer display often use different technologies so they can access the information displayed on a webpage. Two commonly used technologies are screen readers and refreshable Braille displays. As discussed above, a screen reader is a computer program that speaks the text that appears on the computer display, beginning in the top-left corner. A refreshable Braille display is an electronic device that translates text into Braille characters that can be read by touch. These assistive technologies read text. They cannot translate images into speech or Braille, even if words appear in the images. For example, these technologies cannot interpret a photograph of a stop sign, even if the word “stop” appears in the image.
Poorly designed websites can create unnecessary barriers for people with disabilities, just as poorly designed buildings prevent some people with disabilities from entering. Access problems often occur because website designers mistakenly assume that everyone sees and accesses a webpage in the same way. This mistaken assumption can frustrate assistive technologies and their users. Accessible website design recognizes these differences and does not require people to see, hear, or use a standard mouse in order to access the information and services provided.