Publicize puts wp shortcode with wordpress.com and not my site name

so Publicize when it auto post puts a short link ei: http://t.co/62PFbxFFZk
wp.me
that’s what i looks like and on my other sites it has wordpress.com and not my site’s name and no thumbnail. so how can i have it post out my actual link with the actual thumbnail on it

http://wordpress.org/plugins/jetpack/