Not at this time. Currently the location web version link is displayed is at the top of the email campaign messages that are sent. This is generally the best place to have this link anyway, since it will likely be the first text read by the recipient.
If you wish to insert your own web version link, you can do so using the following code: http://app.simplycast.com/email_view.php?group_idno=%%GROUP_ID%%&outgoing_idno=%%OUTGOING_IDNO%%&email_idno=%%EMAIL_IDNO%%.
This is useful if you are sending HTML bulk email content in multiple languages and want to have a second web link inserted in a separate language.