Line 54, Column 57: there is no attribute "role"
role="" is an ARIA attribute that is very handy but not recognized in HTML as yet. Don't worry about that.
<Strong><p>SelectEstates Ltd, June 1, 2010</Strong>
Best not to have capitals there on Strong, but anyhow, the strong tags need to be inside the <p>s. (You can't have an inline element outside a block element.)
Line 144, Column 29: end tag for "img" omitted, but OMITTAG NO was specified
Because this is XHTML, it's probably expecting a slash before the closing >. E.g.
alt="wordpress visitor" <font color='"Red"'>/</font>>
element "BR" undefined
As above, in XHTML that's <br />