QUOTE(-=seth=- @ Mar 16 2007, 02:30 PM)
in my personal experience i've found when using xhtml strict msn has problems if it doesnt validate, i have just 2 errors in my menu and ever since i switched to pure css i've lost msn traffic
How long ago did you make the change? How soon after did your traffic drop? What changes, if any, have your competitors made to their sites in the same time frame? When you "switched to pure css" did anything else on your site change? Page URLs? On page code? On page content/copy? Page titles? Site linking structure/navigation? Anchor text of internal links?
There are a lot of factors that go into rankings... Sorry, but I've seen so much crappy code (XHTML strict, transitional, plain o'l HTML, whatever) that does just fine in the SEs, I have a hard time believing that a measly 2 validation errors in your menu -- which, since you presumably tested the site before taking it live, are not sufficient to affect the browser display -- are the sole cause of a drop in MSN traffic for you.
Not saying it absolutely couldn't
happen... it just doesn't seem likely that's the cause, IMO.