presentation vs. validation (Score 1)

As the president and chief designer of my young web design business... I feel that my first priority is the presentation of my client's websites. Their clients won't know (much less care) if my client's site is W3C validated. Now, with that said, I have modified my coding habits to resolve the vast majority of nitpicky things that the validators balk at. Things like closing tags in a different order than they were opened... using
instead of
... not closing tags at all... that kind of stuff. Once the site presents perfectly, I do go back, and make the site validate. However, I haven't bothered to notify my clients. If they get curious and run my work through a validator, they'll be even more pleased with their purchase.