ping RSS feed in multi search engine

(1)  http://tools.950buy.com/rss-submit/


(2) http://pingomatic.com/


(3) http://www.hostned.com/resources_site_submit.htm


(4)  http://www.ping.in/index.php


(5) https://pingler.com/


(6) http://www.mypagerank.net/service_pingservice_index


(7) http://www.twingly.com/ping