Jane_Doe - 9:14 pm on Feb 16, 2011 (gmt 0)
Want great organics? [StART] using word press!
I don't have any specific research on this, only my own testing and gut feel, but you can make an HTML site look like Wordpress if you want but not the reverse. HTML gives you much more control over the flow and navigation of the site so you can experiment with a wider variety of page and ad layouts.
Just my 2 cents.
In other words... I cannot think of a single reason why anyone would NOT want to validate code. Its a few minutes to a few hours of time, that will have no negative effect.
Because there is no money in doing so? Sites with really old HTML code and tables still rank just fine. I am not privy to Googles' ranking factors but I don't get the sense that things like validation are all that important.