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  • Feb. 28, 2007 -- W3C Validation Comparison
    Here is the comparison of popular websites that pass the validation tests. First, we have the passes, then the worst and/or interesting failers.

    Site Type HTML Result CSS Result
    www.cs.odu.edu/~cmorris HTML 4.01 Strict Passed Passed
    www.cs.odu.edu/~rpilking HTML 4.01 Strict Passed Passed
    www.cs.odu.edu/~gabor XHTML 1.1 Passed Passed
    www.mit.edu HTML 4.01 Transitional Pass 8 Errors
    www.wikipedia.org XHTML 1.0 Strict Pass untestable
    www.amazon.com N/A Failed validation, 1000+ errors 2 errors
    www.cs.odu.edu HTML 4.0 Transitional Failed validation, 69 errors n/a
    www.odu.edu HTML 4.01 Transitional Failed validation, 45 errors n/a
    www.vt.edu XHTML 1.0 Strict Failed validation, 26 errors n/a
    www.cs.vt.edu XHTML 1.0 Transitional Failed validation, 39 errors n/a
    www.oracle.com HTML 4.0 Transitional Failed validation, 23 errors n/a
    www.myspace.com N/A Failed validation, 160 errors
    www.facebook.com XHTML 1.0 Strict Failed validation, 17 errors
    www.aol.com XHTML 1.0 Transitional Failed validation, 167 errors
    www.dell.com HTML 4.0 Transitional Failed validation, 167 errors
    www.uiuc.edu HTML 4.01 Transitional Failed validation, 73 errors
    www.tcc.edu HTML 4.01 Transitional Failed validation, 122 errors
    www.sun.com HTML 4.01 Transitional Failed validation, 30 errors untested
    www.startrek.com N/A Failed validation, 8 errors
    www.army.mil XHTML 1.0 Transitional Failed validation, 59 errors untested
    www.un.org HTML 4.0 Transitional Failed validation, 14 errors untested
    www.google.com N/A Failed validation, 47 errors untested