On Skyrock you can choose between deleting your blogs, profile or complete account. Seems nice! Look on your right hand on http://www.skyrock.com/m/account/setup_privacy.php to check all options.
URLS:
http://www.skyrock.com
http://www.skyrock.com/m/account/delete.php
Please note that AccountKiller.com is not associated with the business listed on this page. AccountKiller provides easy-to-understand instructions and guides on how to cancel charges and relationships from the list of businesses on our site, we have no affiliation with these businesses.