HTML validation: is it worth it?
How important is to be W3C complaint. Currently I have 27 errors reported by W3C validator. Is that ok or I need to reduce the error count?
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Your website may have errors, but it really depends upon the type of error.
Sometimes there are errors you just can't fix because they are out of your control. Ultimately, your goal would be to have no errors. It's not mission critical that you fix all the errors, but for an optimal user experience a no error site helps.