Erm. Not sure if you really needed to post all 25 errors. But anyway, it seems like a nice feature - is there an option to change the level of errors it detects? For instance, if I don't care about anything implemented in HTML 3 or above (say I'm on a contract for a company that has Netscape 2 as the default browser company wide or something)? I'll probably be able to answer this myself soon though as I'm downloading iCab now.