I contacted Yahoo support to find out why my sites are not getting indexed.  Put simply my home pages has way too many validation errors to index.

I ran the HTML validator and it reported over 250 errors.  DNN 4.7.0

I would appreciate feedback from any previous experience it resolving validation errors:  I checked my skin and css file but they do not appear to be the primary cause of the errors.  DotNetNuke.com had over 100 validation errors and even Yahoo.com themselves had over 30.  Because my sites are not getting indexed by Yahoo I must correct as many errors as possible. 

While a good portion of the errors are repeats I am sure to have dozens of code changes to various areas of my sites.

Hopefully future upgrades will not blow away all my works, however I will document my findings and changes.

there is no attribute "ID"

NET-enabling start-tag requires SHORTTAG YES

character data is not allowed here

value of attribute "ID" invalid: "_" cannot start a name

there is no attribute "NAME"

required attribute "TYPE" not specified

document type does not allow element "LINK" here

document type does not allow element "DIV" here

document type does not allow element "TR" here

there is no attribute "HEIGHT"

document type does not allow element "DIV" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag

there is no attribute "TABINDEX"

required attribute "ALT" not specified

end tag for element "P" which is not open

document type does not allow element "UL" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag

end tag for "TR" which is not finished

document type does not allow element "P" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag

syntax of attribute value does not conform to declared value

value of attribute "ALIGN" cannot be ""; must be one of "TOP", "MIDDLE", "BOTTOM", "LEFT", "RIGHT"

reference to non-SGML character

literal is missing closing delimiter

I am not sure the best way to start but just identifying the cause and resolution of these errors would likley resolve most of the 250+ validation errors I received.

I am also not sure of DNN dyanmic generation, what to change?

Thanks for any insight, support, feedback.. - webvalley