Clean, (at least reasonably) semantic code is something I strive for when writing code as part of web projects at Wishingline Design Studio, Inc. It’s not always easy or possible due to numerous factors, but it’s a worthy goal nevertheless.
This is especially true of more marketing or information-driven sites where I feel there’s a greater likelihood of visitors using screen-readers or requiring enhanced accessibility. Try to provide a reasonably good experience for everyone — within reason. This is a philosophy I know is shared by many web professionals who care about standards, usability and accessibility.
What I’m curious about is how much does this matter? Is it bad or just personal taste? Do the requirements for web applications differ greatly compared to more informational pages (eg. blogs, marketing-oriented product websites, etc.)? Should they? Can we just get away with that sort of thing more easily with web applications than with regular vanilla web pages because of their general intended audience? Is it just a matter of the complexity of one type of web page vs another?
Feel free to leave your thoughts in the comments.