I completely agree with you Indizine that there are many important aspects to consider when choosing a web design company. As I said in my initial post, design skills, a sound understanding of the customer's area of industry, price, and standards of customer service (such as free post live bug fixes) all need to be taken into account. In fact it would be worse than short-sighted to evaluate a web design company solely by how much it conforms to the WC3. Equally, if every web design company adheres rigidly to the rules of the current validator, they will miss out on the newest technological developments (for example, the new CSS3 standards, as we have been discussing in the recent posts).
My original point was never that the validator should be used as a means to evaluate whether a web design company is good or not-so-good. It was specifically that the validator can be used to evaluate whether a web design company "adheres to W3C Recommendations", and that getting a message saying a document was successfully checked means that a company "has the ability to build web pages that validate to W3C Recommendations and other standards".
Is this the most important aspect from a customer's perspective? Probably not. But is it important from a designers perspective? Undoubtedly. The validator is simply an embodiment of accepted rules and standards for web design at a specific point in time. If a designer understands these rules and standards and decides to break them for a specific purpose (for example, third party widgets, css3 browser hacks) then that's one thing. And as Kip FX has said, even the validator site itself throws some errors! Not to mention many other prominent sites, Amazon, Last Minute, Tesco to name but a few. But if a designer is completely ignorant of these standards or pays no attention to them at all, his websites may not display properly on other browsers or configurations. And that is important from a customer's perspective.
When it comes down to it, the validator is one of a series of steps available to take when evaluating web designers. It may not be the most important one, and the validator may not even return a perfect result (I know it doesn't on our site, thanks to our use of new CSS3 standards and our facebook "like" button, to name a few!) But if a potential customer runs a check that returns literally hundreds of errors, he may want to wonder why. Ultimately, if these standards matter to web designers, then directly or indirectly, they matter to customers too. But only when considered as part of an overall package that includes design, understanding, price, and all the rest...
