Below feeds directory had simple feeds submission form. Of course there may be more than this, but as I said before, its better to write useful content than to spend it submitting your feed to endless feeds directory.
www.urlfanx.com/search_not_found.php3?no_cache=1 (requires captcha only)
www.plazoo.com/en/addrss.asp (requires email with captcha)
www.feedsee.com/submit.html (requires captcha only)