The problem is that people don't seem to take that kind of testing into consideration unless it really matters (e.g. section 508 for .gov websites).
Lastly, nested tables I don't think are THAT much of a problem. CSS can be useful in other ways - e.g. to display almost the same information in a completely different way that may benefit low vision people, or mobile users. It's some uses of ajax and the like that can be a problem, not so much a table based layout or something like that.
http://www.adobe.com/accessibility/index.html http://msdn.microsoft.com/en-us/library/bb980136.aspx
The problem is that people don't seem to take that kind of testing into consideration unless it really matters (e.g. section 508 for .gov websites).
Lastly, nested tables I don't think are THAT much of a problem. CSS can be useful in other ways - e.g. to display almost the same information in a completely different way that may benefit low vision people, or mobile users. It's some uses of ajax and the like that can be a problem, not so much a table based layout or something like that.