This problem may or may not be solvable. It's quite possible that LinkedIn filter all posts to disallow HTML markup as a security measure, very usual, by the way. You can try to ask this question at LinkedIn,
http://www.linkedin.com/answers[
^].
For a fist step, make sure you have better understanding of HTML. Pay attention that I edited your question to show HTML entities and their source code for
<>
correctly, as
<
and
>
. As you have failed to show these entities in CodeProject HTML post correctly, I cannot 100% trust that you tried to do it at the LinkedIn site correctly. To get a good idea, simply click "Improve question" above and see my changes to your HTML markup; read correspondent documentation on XML and HTML "character entities". Well, just in case.
(Anyone who wants to understand what am I talking about can look at the v.1 if the question.)
Good luck,
—SA