I just do not see the usefulness of a trick such as
<a href="http://www.josephdsmith.blogspot.com/" target="newwindow"><textarea></textarea></a>
What is really the point of having a clickable textarea?
Textarea is use in a web form to allow your web site visitor to write some content to submit.
I know you are new to HTML and it's exciting to explore what you can achieve with all those tags.
But keep in mind, the usability of your website is more important than any fancy tricks you may have found.
Did you know you can use CSS to customize the look-and-feel of a hyperlink?
I am not trying to discourage you but just to make sure you value user experience as well.
So keep practicing.